Live analysis

12,009

12,009 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.).

12,009 (twelve thousand nine) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 3 × 4,003. Written other ways, in hexadecimal, 0x2EE9.

Arithmetic Number Cube-Free Deficient Number Happy Number Odious Number Recamán's Sequence Semiprime Squarefree

Interestingness

★ ★ ★ ★ ☆

6 notable facts · grade B

11,997 11,998 11,999 12,000 12,001 12,002 12,003 12,004 12,005 12,006 12,007 12,008 12,009 12,010 12,011 12,012 12,013 12,014 12,015 12,016 12,017 12,018 12,019 12,020 12,021

less more

Properties

Parity: Odd
Digit count: 5
Digit sum: 12
Digit product: 0
Digital root: 3
Palindrome: No
Bit width: 14 bits
Reversed: 90,021
Recamán's sequence: a(22,766) = 12,009
Square (n²): 144,216,081
Cube (n³): 1,731,890,916,729
Divisor count: 4
σ(n) — sum of divisors: 16,016
φ(n) — Euler's totient: 8,004
Sum of prime factors: 4,006

Primality

Prime factorization: 3 × 4003

Nearest primes: 12,007 (−2) · 12,011 (+2)

Divisors & multiples

All divisors (4)

1 · 3 · 4003 · 12009

Aliquot sum (sum of proper divisors): 4,007

Factor pairs (a × b = 12,009)

1 × 12009

3 × 4003

First multiples

12,009 · 24,018 (double) · 36,027 · 48,036 · 60,045 · 72,054 · 84,063 · 96,072 · 108,081 · 120,090

Sums & aliquot sequence

As consecutive integers: 6,004 + 6,005 4,002 + 4,003 + 4,004 1,999 + 2,000 + 2,001 + 2,002 + 2,003 + 2,004

Aliquot sequence: 12,009 → 4,007 → 1 → 0 — terminates at zero

Continued fraction of √n

√12,009 = [109; (1, 1, 2, 2, 2, 1, 2, 30, 1, 15, 1, 8, 5, 4, 3, 1, 1, 1, 1, 5, 3, 5, 6, 13, …)]

Representations

In words: twelve thousand nine
Ordinal: 12009th
Binary: 10111011101001
Octal: 27351
Hexadecimal: 0x2EE9
Base64: Luk=
One's complement: 53,526 (16-bit)
Scientific notation: 1.2009 × 10⁴
As a duration: 12,009 s = 3 hours, 20 minutes, 9 seconds

In other bases

ternary (3) 121110210

quaternary (4) 2323221

quinary (5) 341014

senary (6) 131333

septenary (7) 50004

nonary (9) 17423

undecimal (11) 9028

duodecimal (12) 6b49

tridecimal (13) 560a

tetradecimal (14) 453b

pentadecimal (15) 3859

As an angle

12,009° = 33 × 360° + 129°

129° ≈ 2.251 rad

Compass bearing: SE (southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹 𒌋𒌋 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓂍𓆼𓆼𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵ιβθʹ
Mayan (base 20): 𝋡·𝋪·𝋠·𝋩
Chinese: 一萬二千零九
Chinese (financial): 壹萬貳仟零玖

In other modern scripts

Eastern Arabic ١٢٠٠٩ Devanagari १२००९ Bengali ১২০০৯ Tamil ௧௨௦௦௯ Thai ๑๒๐๐๙ Tibetan ༡༢༠༠༩ Khmer ១២០០៩ Lao ໑໒໐໐໙ Burmese ၁၂၀၀၉

Digit at this position in famous constants

π — Pi (π): Digit 12,009 = 5
e — Euler's number (e): Digit 12,009 = 8
φ — Golden ratio (φ): Digit 12,009 = 0
√2 — Pythagoras's (√2): Digit 12,009 = 3
ln 2 — Natural log of 2: Digit 12,009 = 3
γ — Euler-Mascheroni (γ): Digit 12,009 = 2

Also seen as

Unicode codepoint

⻩

CJK Radical Simplified Yellow

U+2EE9

Other symbol (So)

UTF-8 encoding: E2 BB A9 (3 bytes).

Lookup U+2EE9 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#002EE9

RGB(0, 46, 233)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.46.233.

Address: 0.0.46.233
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.46.233

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

Musical pitch

Heard as a frequency, 12,009 Hz is closest to:

Concert pitch (A4 = 440 Hz): F♯9 (11839.8 Hz, +25¢)
Scientific pitch (C4 = 256 Hz): G9 (12274.1 Hz, -38¢)
Baroque pitch (A4 = 415 Hz): G9 (11831.1 Hz, +26¢)

Position in π

The digit sequence 12009 first appears in π at position 11,593 of the decimal expansion (the 11,593ordinal-suffix:rd 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.

Look up 12009 on Pi Search ↗