4,006
4,006 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 6,004
- Recamán's sequence
- a(14,379) = 4,006
- Square (n²)
- 16,048,036
- Cube (n³)
- 64,288,432,216
- Divisor count
- 4
- σ(n) — sum of divisors
- 6,012
- φ(n) — Euler's totient
- 2,002
- Sum of prime factors
- 2,005
Primality
Prime factorization: 2 × 2003
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- four thousand six
- Ordinal
- 4006th
- Binary
- 111110100110
- Octal
- 7646
- Hexadecimal
- 0xFA6
- Base64
- D6Y=
- One's complement
- 61,529 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵δϛʹ
- Mayan (base 20)
- 𝋪·𝋠·𝋦
- Chinese
- 四千零六
- Chinese (financial)
- 肆仟零陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 4,006 = 7
- e — Euler's number (e)
- Digit 4,006 = 0
- φ — Golden ratio (φ)
- Digit 4,006 = 0
- √2 — Pythagoras's (√2)
- Digit 4,006 = 0
- ln 2 — Natural log of 2
- Digit 4,006 = 0
- γ — Euler-Mascheroni (γ)
- Digit 4,006 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 4006, here are decompositions:
- 3 + 4003 = 4006
- 5 + 4001 = 4006
- 17 + 3989 = 4006
- 59 + 3947 = 4006
- 83 + 3923 = 4006
- 89 + 3917 = 4006
- 173 + 3833 = 4006
- 227 + 3779 = 4006
Showing the first eight; more decompositions exist.
UTF-8 encoding: E0 BE A6 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.15.166.
- Address
- 0.0.15.166
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.15.166
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 4006 first appears in π at position 6,348 of the decimal expansion (the 6,348ordinal-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.