489,440
489,440 is a composite number, even.
489,440 (four hundred eighty-nine thousand four hundred forty) is an even 6-digit number. It is a composite number with 96 divisors, and factors as 2⁵ × 5 × 7 × 19 × 23. Its proper divisors sum to 962,080, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x777E0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 29
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 44,984
- Square (n²)
- 239,551,513,600
- Cube (n³)
- 117,246,092,816,384,000
- Divisor count
- 96
- σ(n) — sum of divisors
- 1,451,520
- φ(n) — Euler's totient
- 152,064
- Sum of prime factors
- 64
Primality
Prime factorization: 2 5 × 5 × 7 × 19 × 23
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√489,440 = [699; (1, 1, 2, 349, 2, 1, 1, 1398)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- four hundred eighty-nine thousand four hundred forty
- Ordinal
- 489440th
- Binary
- 1110111011111100000
- Octal
- 1673740
- Hexadecimal
- 0x777E0
- Base64
- B3fg
- One's complement
- 4,294,477,855 (32-bit)
- Scientific notation
- 4.8944 × 10⁵
- As a duration
- 489,440 s = 5 days, 15 hours, 57 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵υπθυμʹ
- Chinese
- 四十八萬九千四百四十
- Chinese (financial)
- 肆拾捌萬玖仟肆佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 489440, here are decompositions:
- 13 + 489427 = 489440
- 31 + 489409 = 489440
- 73 + 489367 = 489440
- 79 + 489361 = 489440
- 97 + 489343 = 489440
- 103 + 489337 = 489440
- 157 + 489283 = 489440
- 199 + 489241 = 489440
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.119.224.
- Address
- 0.7.119.224
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.119.224
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 489,440 and was likely granted around 1892.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.