integers.info
Nine
9 in other numeral systems
Binary
:
1001
Octal
:
11
Hex
:
9
Roman
:
IX
Prime factorization of 9
3
^{2}
Divisors of 9
1
,
3
and
9
A polygon with 9 sides
Nonagon or Enneagon
Is 9 in the Fibonacci number sequence?
No.
Its nearest Fibonacci number neighbors are
8
and
13
.