Number 9, number theory characteristics and more…

Visual representations

Binary image (n×n bits)

Element F – Fluorine

Nonagonal · P₉(2) = 9

Square · P₄(3) = 9

Prime factorization

Representations of 9

Greek numeral

θʹ

Sanskrit numeral

९

Arabic numeral

٩

Roman numeral

IX

Maya numeral

●●●●
▃▃▃▃▃

Chinese numeral

九

Hebrew numeral

ט

Egyptian numeral

𓏹𓏹𓏹𓏹𓏹𓏹𓏹𓏹𓏹

Morse code

----.

9 in different numeral systems

Binary

Base-3

Base-4

Base-5

Base-6

Base-7

Base-8

Duodecimal

Hex

Vigesimal

Base-24

Base-36

Negabinary

Factorization

Prime factors: 3

Divisors: 1, 3, 9

Sum of divisors other than 9: 4

Product of prime factors: 9 = 3 × 3

Number-theory characteristics (10)

Nonagonal Square Perfect Power Difference of 2 squares Evil number Refactorable Powerful number Odd Composite Deficient

Base-10 digit properties (8)

These depend on the decimal representation of the number.

Palindromic Harshad Kaprekar Repdigit Spy number Narcissistic Trimorphic Zuckerman number

Related primes

Number 9 prime

23

Prime number before 9

7

Prime number after 9

11