999 (nine hundred ninety-nine or nine-nine-nine) is a
natural number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country").
Numbers used for counting are called ''cardinal ...
following
998
Year 998 ( CMXCVIII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.
Events
By place
Europe
* Spring – Otto III retakes Rome and restores power in the papal city. Crescenti ...
and preceding
1000 1000 or thousand may refer to:
* 1000 (number), a natural number
* AD 1000, a leap year in the Julian calendar
* 1000 BC, a year of the Before Christ era
* 1000 metres, a middle-distance running event
* 1000°, a German electronic dance music magazi ...
.
In mathematics
* 999 = 3
3 × 37, a
Kaprekar number
In mathematics, a natural number in a given number base is a p-Kaprekar number if the representation of its square in that base can be split into two parts, where the second part has p digits, that add up to the original number. The numbers are n ...
.
* a
repdigit
In recreational mathematics, a repdigit or sometimes monodigit is a natural number composed of repeated instances of the same digit in a positional number system (often implicitly decimal). The word is a portmanteau of repeated and digit.
Example ...
in bases 10 and 36.
* a
palindromic number in bases 10, 14 (515
14), and 36 (RR
36).
* the largest 3-digit
decimal integer
An integer is the number zero (), a positive natural number (, , , etc.) or a negative integer with a minus sign ( −1, −2, −3, etc.). The negative numbers are the additive inverses of the corresponding positive numbers. In the languag ...
.
* the largest number in English not containing the letter 'o' in its name, when using
short scale
The long and short scales are two of several naming systems for integer powers of ten which use some of the same terms for different magnitudes.
For whole numbers smaller than 1,000,000,000 (109), such as one thousand or one million, the t ...
.
* A base-10
Harshad number because 999/(9+9+9) = 37, a
whole number
Other fields
* In some parts of the world, such as the UK and
Commonwealth countries, 999 (pronounced as
9-9-9) is the
emergency telephone number
Most public switched telephone networks have a single emergency telephone number (sometimes known as the universal emergency telephone number or the emergency services number) that allows a caller to contact local emergency services for assis ...
.
*
999 999 or triple nine most often refers to:
* 999 (emergency telephone number), a telephone number for the emergency services in several countries
* 999 (number), an integer
* AD 999, a year
* 999 BC, a year
Books
* ''999'' (anthology) or ''999: T ...
was a
London
London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
punk
Punk or punks may refer to:
Genres, subculture, and related aspects
* Punk rock, a music genre originating in the 1970s associated with various subgenres
* Punk subculture, a subculture associated with punk rock, or aspects of the subculture s ...
band active during the 1970s.
* 999 is also the short name for the visual novel ''
Nine Hours, Nine Persons, Nine Doors
''Nine Hours, Nine Persons, Nine Doors'' is a visual novel and adventure video game developed by Chunsoft. It is the first installment in the ''Zero Escape'' series, and was released in Japan in December 2009 and in North America in November 2 ...
''.
* 999 is the last 3 Numerical digit, digit number.
References
Integers
{{num-stub