Live analysis

3,801

3,801 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.).

3,801 (three thousand eight hundred one) is an odd 4-digit number. It is a composite number with 8 divisors, and factors as 3 × 7 × 181. Written other ways, in Roman numerals it is MMMDCCCI and in binary, 111011011001.

Arithmetic Number Cube-Free Deficient Number Evil Number Recamán's Sequence Sphenic Number Squarefree

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

3,789 3,790 3,791 3,792 3,793 3,794 3,795 3,796 3,797 3,798 3,799 3,800 3,801 3,802 3,803 3,804 3,805 3,806 3,807 3,808 3,809 3,810 3,811 3,812 3,813

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 12
Digit product: 0
Digital root: 3
Palindrome: No
Bit width: 12 bits
Reversed: 1,083
Recamán's sequence: a(6,326) = 3,801
Square (n²): 14,447,601
Cube (n³): 54,915,331,401
Divisor count: 8
σ(n) — sum of divisors: 5,824
φ(n) — Euler's totient: 2,160
Sum of prime factors: 191

Primality

Prime factorization: 3 × 7 × 181

Nearest primes: 3,797 (−4) · 3,803 (+2)

Divisors & multiples

All divisors (8)

1 · 3 · 7 · 21 · 181 · 543 · 1267 · 3801

Aliquot sum (sum of proper divisors): 2,023

Factor pairs (a × b = 3,801)

1 × 3801

3 × 1267

7 × 543

21 × 181

First multiples

3,801 · 7,602 (double) · 11,403 · 15,204 · 19,005 · 22,806 · 26,607 · 30,408 · 34,209 · 38,010

Sums & aliquot sequence

As consecutive integers: 1,900 + 1,901 1,266 + 1,267 + 1,268 631 + 632 + 633 + 634 + 635 + 636 540 + 541 + … + 546

Aliquot sequence: 3,801 → 2,023 → 433 → 1 → 0 — terminates at zero

Continued fraction of √n

√3,801 = [61; (1, 1, 1, 7, 24, 1, 1, 7, 1, 2, 2, 4, 1, 1, 40, 1, 1, 4, 2, 2, 1, 7, 1, 1, …)]

Period length 30 — the block in parentheses repeats forever.

Representations

In words: three thousand eight hundred one
Ordinal: 3801st
Roman numeral: MMMDCCCI
Binary: 111011011001
Octal: 7331
Hexadecimal: 0xED9
Base64: Dtk=
One's complement: 61,734 (16-bit)
Scientific notation: 3.801 × 10³
As a duration: 3,801 s = 1 hour, 3 minutes, 21 seconds

In other bases

ternary (3) 12012210

quaternary (4) 323121

quinary (5) 110201

senary (6) 25333

septenary (7) 14040

nonary (9) 5183

undecimal (11) 2946

duodecimal (12) 2249

tridecimal (13) 1965

tetradecimal (14) 1557

pentadecimal (15) 11d6

As an angle

3,801° = 10 × 360° + 201°

201° ≈ 3.508 rad

Compass bearing: SSW (south-southwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹 𒁹𒁹𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺
Greek (Milesian): ͵γωαʹ
Mayan (base 20): 𝋩·𝋪·𝋡
Chinese: 三千八百零一
Chinese (financial): 參仟捌佰零壹

In other modern scripts

Eastern Arabic ٣٨٠١ Devanagari ३८०१ Bengali ৩৮০১ Tamil ௩௮௦௧ Thai ๓๘๐๑ Tibetan ༣༨༠༡ Khmer ៣៨០១ Lao ໓໘໐໑ Burmese ၃၈၀၁

Digit at this position in famous constants

π — Pi (π): Digit 3,801 = 6
e — Euler's number (e): Digit 3,801 = 8
φ — Golden ratio (φ): Digit 3,801 = 7
√2 — Pythagoras's (√2): Digit 3,801 = 3
ln 2 — Natural log of 2: Digit 3,801 = 8
γ — Euler-Mascheroni (γ): Digit 3,801 = 5

Also seen as

Unicode codepoint

໙

Lao Digit Nine

U+0ED9

Decimal digit (Nd)

UTF-8 encoding: E0 BB 99 (3 bytes).

Lookup U+0ED9 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000ED9

RGB(0, 14, 217)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.14.217.

Address: 0.0.14.217
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.14.217

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

Musical pitch

Heard as a frequency, 3,801 Hz is closest to:

Concert pitch (A4 = 440 Hz): A♯7 (3729.3 Hz, +33¢)
Scientific pitch (C4 = 256 Hz): B7 (3866.1 Hz, -29¢)
Baroque pitch (A4 = 415 Hz): B7 (3726.6 Hz, +34¢)

Position in π

The digit sequence 3801 first appears in π at position 3,836 of the decimal expansion (the 3,836ordinal-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 3801 on Pi Search ↗