# 9

9 (nine) is the natural number following 8 and preceding 10.

 ← 8 9 10 →
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Cardinalnine
Ordinal9th
(ninth)
Numeral systemnonary
Factorization32
Divisors1, 3, 9
Greek numeralΘ´
Roman numeralIX, ix
Greek prefixennea-
Latin prefixnona-
Binary10012
Ternary1003
Octal118
Duodecimal912