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13,909

13,909 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Arithmetic Number Deficient Number Evil Number Recamán's Sequence Self Number Semiprime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
22
Digit product
0
Digital root
4
Palindrome
No
Bit width
14 bits
Reversed
90,931
Recamán's sequence
a(20,898) = 13,909
Square (n²)
193,460,281
Cube (n³)
2,690,839,048,429
Divisor count
4
σ(n) — sum of divisors
15,904
φ(n) — Euler's totient
11,916
Sum of prime factors
1,994

Primality

Prime factorization: 7 × 1987

Nearest primes: 13,907 (−2) · 13,913 (+4)

Divisors & multiples

All divisors (4)
1 · 7 · 1987 · 13909
Aliquot sum (sum of proper divisors): 1,995
Factor pairs (a × b = 13,909)
1 × 13909
7 × 1987
First multiples
13,909 · 27,818 (double) · 41,727 · 55,636 · 69,545 · 83,454 · 97,363 · 111,272 · 125,181 · 139,090

Sums & aliquot sequence

As consecutive integers: 6,954 + 6,955 1,984 + 1,985 + … + 1,990 987 + 988 + … + 1,000
Aliquot sequence: 13,909 1,995 1,845 1,431 729 364 420 924 1,764 3,423 1,825 469 75 49 8 7 1 — unresolved within range

Representations

In words
thirteen thousand nine hundred nine
Ordinal
13909th
Binary
11011001010101
Octal
33125
Hexadecimal
0x3655
Base64
NlU=
One's complement
51,626 (16-bit)
In other bases
ternary (3) 201002011
quaternary (4) 3121111
quinary (5) 421114
senary (6) 144221
septenary (7) 55360
nonary (9) 21064
undecimal (11) a4a5
duodecimal (12) 8071
tridecimal (13) 643c
tetradecimal (14) 50d7
pentadecimal (15) 41c4

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιγϡθʹ
Mayan (base 20)
𝋡·𝋮·𝋯·𝋩
Chinese
一萬三千九百零九
Chinese (financial)
壹萬參仟玖佰零玖
In other modern scripts
Eastern Arabic ١٣٩٠٩ Devanagari १३९०९ Bengali ১৩৯০৯ Tamil ௧௩௯௦௯ Thai ๑๓๙๐๙ Tibetan ༡༣༩༠༩ Khmer ១៣៩០៩ Lao ໑໓໙໐໙ Burmese ၁၃၉၀၉

Digit at this position in famous constants

π — Pi (π)
Digit 13,909 = 3
e — Euler's number (e)
Digit 13,909 = 6
φ — Golden ratio (φ)
Digit 13,909 = 7
√2 — Pythagoras's (√2)
Digit 13,909 = 1
ln 2 — Natural log of 2
Digit 13,909 = 2
γ — Euler-Mascheroni (γ)
Digit 13,909 = 9

Also seen as

Unicode codepoint
CJK Unified Ideograph-3655
U+3655
Other letter (Lo)

UTF-8 encoding: E3 99 95 (3 bytes).

Hex color
#003655
RGB(0, 54, 85)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.85.

Address
0.0.54.85
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.54.85

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 13909 first appears in π at position 8,177 of the decimal expansion (the 8,177ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.