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40,001

40,001 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 Sphenic Number Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
5
Digit product
0
Digital root
5
Palindrome
No
Bit width
16 bits
Reversed
10,004
Square (n²)
1,600,080,001
Cube (n³)
64,004,800,120,001
Divisor count
8
σ(n) — sum of divisors
45,864
φ(n) — Euler's totient
34,560
Sum of prime factors
211

Primality

Prime factorization: 13 × 17 × 181

Nearest primes: 39,989 (−12) · 40,009 (+8)

Divisors & multiples

All divisors (8)
1 · 13 · 17 · 181 · 221 · 2353 · 3077 · 40001
Aliquot sum (sum of proper divisors): 5,863
Factor pairs (a × b = 40,001)
1 × 40001
13 × 3077
17 × 2353
181 × 221
First multiples
40,001 · 80,002 (double) · 120,003 · 160,004 · 200,005 · 240,006 · 280,007 · 320,008 · 360,009 · 400,010

Sums & aliquot sequence

As a sum of two squares: 1² + 200² = 20² + 199² = 76² + 185² = 95² + 176²
As consecutive integers: 20,000 + 20,001 3,071 + 3,072 + … + 3,083 2,345 + 2,346 + … + 2,361 1,526 + 1,527 + … + 1,551
Aliquot sequence: 40,001 5,863 1,193 1 0 — terminates at zero

Representations

In words
forty thousand one
Ordinal
40001st
Binary
1001110001000001
Octal
116101
Hexadecimal
0x9C41
Base64
nEE=
One's complement
25,534 (16-bit)
In other bases
ternary (3) 2000212112
quaternary (4) 21301001
quinary (5) 2240001
senary (6) 505105
septenary (7) 224423
nonary (9) 60775
undecimal (11) 28065
duodecimal (12) 1b195
tridecimal (13) 15290
tetradecimal (14) 10813
pentadecimal (15) bcbb

Historical numeral systems

Babylonian (base 60)
𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓂍𓂍𓂍𓂍𓏺
Greek (Milesian)
͵μαʹ
Mayan (base 20)
𝋥·𝋠·𝋠·𝋡
Chinese
四萬零一
Chinese (financial)
肆萬零壹
In other modern scripts
Eastern Arabic ٤٠٠٠١ Devanagari ४०००१ Bengali ৪০০০১ Tamil ௪௦௦௦௧ Thai ๔๐๐๐๑ Tibetan ༤༠༠༠༡ Khmer ៤០០០១ Lao ໔໐໐໐໑ Burmese ၄၀၀၀၁

Digit at this position in famous constants

π — Pi (π)
Digit 40,001 = 1
e — Euler's number (e)
Digit 40,001 = 6
φ — Golden ratio (φ)
Digit 40,001 = 6
√2 — Pythagoras's (√2)
Digit 40,001 = 3
ln 2 — Natural log of 2
Digit 40,001 = 5
γ — Euler-Mascheroni (γ)
Digit 40,001 = 4

Also seen as

Unicode codepoint
CJK Unified Ideograph-9C41
U+9C41
Other letter (Lo)

UTF-8 encoding: E9 B1 81 (3 bytes).

Hex color
#009C41
RGB(0, 156, 65)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.156.65.

Address
0.0.156.65
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.156.65

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

Position in π

The digit sequence 40001 first appears in π at position 39,087 of the decimal expansion (the 39,087ordinal-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.