289 is the
natural number
In mathematics, the natural numbers are the numbers 0, 1, 2, 3, and so on, possibly excluding 0. Some start counting with 0, defining the natural numbers as the non-negative integers , while others start with 1, defining them as the positive in ...
following
288 and preceding
290.
In mathematics
*289 is an odd
composite number
A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Accordingly it is a positive integer that has at least one divisor other than 1 and itself. Every positive integer is composite, prime numb ...
with only one prime factor.
*289 is the 9th
Friedman number
A Friedman number is an integer, which represented in a given numeral system, is the result of a non-trivial expression using all its own digits in combination with any of the four basic arithmetic operators (+, −, ×, ÷), additive inverses, ...
. Friedman numbers are numbers that can be written by using its own digits the exact number of times they show up in the number. This one can be expressed as (8+9)
2.
*289 is a
perfect square being equal to 17
2. It is also the 7th number to only have 3 factors because it is a square of a prime number.
*289 is the sum of
perfect cubes. It is the sum of 1
3+2
3+4
3+6
3.
*289 is equivalent to the sum of the first 5
whole numbers to their respective
powers. It is equal to 0
0+1
1+2
2+3
3+4
4.
References
External links
{{Integers, 2
Integers