Number 9

Representations of 9
Greek numeral
θʹ
Arabic numeral
٩
Roman numeral
IX
Maya numeral
●●●●
▃▃▃▃▃
Chinese numeral
九
Hebrew numeral
ט
9 in different numeral systems
Binary
1001
Base-3
100
Base-4
21
Base-5
14
Base-6
13
Base-7
12
Base-8
11
Duodecimal
9
Hex
9
Vigesimal
9
Base-24
9
Base-36
9
Negabinary
11001
Factorization
Prime factors
3
Divisors
1, 3, 9
Sum of divisors other than 9
4
Product of prime factors
9 = 3 x 3
Characteristics
Nonagonal Square Perfect Power Difference of 2 squares Palindromic Harshad Kaprekar Odd Composite Deficient
Related primes
Number 9 prime
23
Prime number before 9
7
Prime number after 9
11