number.wiki
Number

13,009

13,009 is a prime, odd.

Deficient Number Happy Number Prime Sexy Prime Squarefree Twin Prime

Properties

Parity
Odd
Digit count
5
Digit sum
13
Digital root
4
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
13,010

Primality

13,009 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 13009
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 13,009)
1 × 13009
First multiples
13,009 · 26,018 · 39,027 · 52,036 · 65,045 · 78,054 · 91,063 · 104,072 · 117,081 · 130,090

Representations

In words
thirteen thousand nine
Ordinal
13009th
Binary
11001011010001
Octal
31321
Hexadecimal
32D1

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 13,007 (gap of 2)
  • Next prime: 13,033 (gap of 24)

Pair status: twin with 13007.

Unicode codepoint
U+32D1
Other symbol (So)

UTF-8 encoding: E3 8B 91 (3 bytes).

Hex color
#0032D1
RGB(0, 50, 209)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.209.