999,240
999,240 is a composite number, even.
999,240 (nine hundred ninety-nine thousand two hundred forty) is an even 6-digit number. It is a composite number with 64 divisors, and factors as 2³ × 3 × 5 × 11 × 757. Its proper divisors sum to 2,275,320, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF3F48.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 33
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 42,999
- Square (n²)
- 998,480,577,600
- Cube (n³)
- 997,721,732,361,024,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 3,274,560
- φ(n) — Euler's totient
- 241,920
- Sum of prime factors
- 782
Primality
Prime factorization: 2 3 × 3 × 5 × 11 × 757
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√999,240 = [999; (1, 1, 1, 1, 1, 2, 2, 5, 8, 2, 7, 1, 8, 2, 2, 1, 1, 40, 4, 1, 1, 1, 1, 2, …)]
Period length 54 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety-nine thousand two hundred forty
- Ordinal
- 999240th
- Binary
- 11110011111101001000
- Octal
- 3637510
- Hexadecimal
- 0xF3F48
- Base64
- Dz9I
- One's complement
- 4,293,968,055 (32-bit)
- Scientific notation
- 9.9924 × 10⁵
- As a duration
- 999,240 s = 11 days, 13 hours, 34 minutes
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ϡϟθσμʹ
- Chinese
- 九十九萬九千二百四十
- Chinese (financial)
- 玖拾玖萬玖仟貳佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 999240, here are decompositions:
- 7 + 999233 = 999240
- 19 + 999221 = 999240
- 23 + 999217 = 999240
- 41 + 999199 = 999240
- 59 + 999181 = 999240
- 71 + 999169 = 999240
- 107 + 999133 = 999240
- 139 + 999101 = 999240
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.63.72.
- Address
- 0.15.63.72
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.63.72
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 999,240 and was likely granted around 1911.
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°.