40,040
40,040 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 8
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 4,004
- Square (n²)
- 1,603,201,600
- Cube (n³)
- 64,192,192,064,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 120,960
- φ(n) — Euler's totient
- 11,520
- Sum of prime factors
- 42
Primality
Prime factorization: 2 3 × 5 × 7 × 11 × 13
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty thousand forty
- Ordinal
- 40040th
- Binary
- 1001110001101000
- Octal
- 116150
- Hexadecimal
- 0x9C68
- Base64
- nGg=
- One's complement
- 25,495 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μμʹ
- Mayan (base 20)
- 𝋥·𝋠·𝋢·𝋠
- Chinese
- 四萬零四十
- Chinese (financial)
- 肆萬零肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 40,040 = 7
- e — Euler's number (e)
- Digit 40,040 = 5
- φ — Golden ratio (φ)
- Digit 40,040 = 6
- √2 — Pythagoras's (√2)
- Digit 40,040 = 8
- ln 2 — Natural log of 2
- Digit 40,040 = 6
- γ — Euler-Mascheroni (γ)
- Digit 40,040 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 40040, here are decompositions:
- 3 + 40037 = 40040
- 31 + 40009 = 40040
- 61 + 39979 = 40040
- 103 + 39937 = 40040
- 139 + 39901 = 40040
- 157 + 39883 = 40040
- 163 + 39877 = 40040
- 193 + 39847 = 40040
Showing the first eight; more decompositions exist.
UTF-8 encoding: E9 B1 A8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.156.104.
- Address
- 0.0.156.104
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.156.104
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 40040 first appears in π at position 174,345 of the decimal expansion (the 174,345ordinal-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.