Live analysis

3,987

3,987 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 Happy Number Recamán's Sequence Self Number

Properties

Parity: Odd
Digit count: 4
Digit sum: 27
Digit product: 1,512
Digital root: 9
Palindrome: No
Bit width: 12 bits
Reversed: 7,893
Recamán's sequence: a(14,417) = 3,987
Square (n²): 15,896,169
Cube (n³): 63,378,025,803
Divisor count: 6
σ(n) — sum of divisors: 5,772
φ(n) — Euler's totient: 2,652
Sum of prime factors: 449

Primality

Prime factorization: 3 ² × 443

Nearest primes: 3,967 (−20) · 3,989 (+2)

Divisors & multiples

All divisors (6)

1 · 3 · 9 · 443 · 1329 · 3987

Aliquot sum (sum of proper divisors): 1,785

Factor pairs (a × b = 3,987)

1 × 3987

3 × 1329

9 × 443

First multiples

3,987 · 7,974 (double) · 11,961 · 15,948 · 19,935 · 23,922 · 27,909 · 31,896 · 35,883 · 39,870

Sums & aliquot sequence

As consecutive integers: 1,993 + 1,994 1,328 + 1,329 + 1,330 662 + 663 + 664 + 665 + 666 + 667 439 + 440 + … + 447

Aliquot sequence: 3,987 → 1,785 → 1,671 → 561 → 303 → 105 → 87 → 33 → 15 → 9 → 4 → 3 → 1 → 0 — terminates at zero

Representations

In words: three thousand nine hundred eighty-seven
Ordinal: 3987th
Roman numeral: MMMCMLXXXVII
Binary: 111110010011
Octal: 7623
Hexadecimal: 0xF93
Base64: D5M=
One's complement: 61,548 (16-bit)

In other bases

ternary (3) 12110200

quaternary (4) 332103

quinary (5) 111422

senary (6) 30243

septenary (7) 14424

nonary (9) 5420

undecimal (11) 2aa5

duodecimal (12) 2383

tridecimal (13) 1a79

tetradecimal (14) 164b

pentadecimal (15) 12ac

Historical numeral systems

Babylonian (base 60): 𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵γϡπζʹ
Mayan (base 20): 𝋩·𝋳·𝋧
Chinese: 三千九百八十七
Chinese (financial): 參仟玖佰捌拾柒

In other modern scripts

Eastern Arabic ٣٩٨٧ Devanagari ३९८७ Bengali ৩৯৮৭ Tamil ௩௯௮௭ Thai ๓๙๘๗ Tibetan ༣༩༨༧ Khmer ៣៩៨៧ Lao ໓໙໘໗ Burmese ၃၉၈၇

Digit at this position in famous constants

π — Pi (π): Digit 3,987 = 6
e — Euler's number (e): Digit 3,987 = 7
φ — Golden ratio (φ): Digit 3,987 = 5
√2 — Pythagoras's (√2): Digit 3,987 = 9
ln 2 — Natural log of 2: Digit 3,987 = 4
γ — Euler-Mascheroni (γ): Digit 3,987 = 5

Also seen as

Unicode codepoint

ྒྷ

Tibetan Subjoined Letter Gha

U+0F93

Non-spacing mark (Mn)

UTF-8 encoding: E0 BE 93 (3 bytes).

Lookup U+0F93 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000F93

RGB(0, 15, 147)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.15.147.

Address: 0.0.15.147
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.15.147

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

Position in π

The digit sequence 3987 first appears in π at position 20,746 of the decimal expansion (the 20,746ordinal-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.

Look up 3987 on Pi Search ↗