43,990
43,990 is a composite number, even.
43,990 (forty-three thousand nine hundred ninety) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 53 × 83. Written other ways, in hexadecimal, 0xABD6.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 25
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 9,934
- Recamán's sequence
- a(70,612) = 43,990
- Square (n²)
- 1,935,120,100
- Cube (n³)
- 85,125,933,199,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 81,648
- φ(n) — Euler's totient
- 17,056
- Sum of prime factors
- 143
Primality
Prime factorization: 2 × 5 × 53 × 83
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√43,990 = [209; (1, 2, 1, 4, 2, 3, 69, 1, 1, 1, 1, 1, 7, 6, 1, 45, 1, 2, 1, 45, 1, 6, 7, 1, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- forty-three thousand nine hundred ninety
- Ordinal
- 43990th
- Binary
- 1010101111010110
- Octal
- 125726
- Hexadecimal
- 0xABD6
- Base64
- q9Y=
- One's complement
- 21,545 (16-bit)
- Scientific notation
- 4.399 × 10⁴
- As a duration
- 43,990 s = 12 hours, 13 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹 𒌋𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μγϡϟʹ
- Mayan (base 20)
- 𝋥·𝋩·𝋳·𝋪
- Chinese
- 四萬三千九百九十
- Chinese (financial)
- 肆萬參仟玖佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 43,990 = 9
- e — Euler's number (e)
- Digit 43,990 = 9
- φ — Golden ratio (φ)
- Digit 43,990 = 5
- √2 — Pythagoras's (√2)
- Digit 43,990 = 5
- ln 2 — Natural log of 2
- Digit 43,990 = 0
- γ — Euler-Mascheroni (γ)
- Digit 43,990 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 43990, here are decompositions:
- 3 + 43987 = 43990
- 17 + 43973 = 43990
- 29 + 43961 = 43990
- 47 + 43943 = 43990
- 101 + 43889 = 43990
- 137 + 43853 = 43990
- 197 + 43793 = 43990
- 269 + 43721 = 43990
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA AF 96 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.171.214.
- Address
- 0.0.171.214
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.171.214
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 43990 first appears in π at position 165,750 of the decimal expansion (the 165,750ordinal-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.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.