999,000
999,000 is a composite number, even.
999,000 (nine hundred ninety-nine thousand) is an even 6-digit number. It is a composite number with 128 divisors, and factors as 2³ × 3³ × 5³ × 37. Its proper divisors sum to 2,557,800, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF3E58.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 999
- Flips to (rotate 180°)
- 666
- Square (n²)
- 998,001,000,000
- Cube (n³)
- 997,002,999,000,000,000
- Divisor count
- 128
- σ(n) — sum of divisors
- 3,556,800
- φ(n) — Euler's totient
- 259,200
- Sum of prime factors
- 67
Primality
Prime factorization: 2 3 × 3 3 × 5 3 × 37
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√999,000 = [999; (2, 1998)]
Period length 2 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety-nine thousand
- Ordinal
- 999000th
- Binary
- 11110011111001011000
- Octal
- 3637130
- Hexadecimal
- 0xF3E58
- Base64
- Dz5Y
- One's complement
- 4,293,968,295 (32-bit)
- Scientific notation
- 9.99 × 10⁵
- As a duration
- 999,000 s = 11 days, 13 hours, 30 minutes
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼
- Greek (Milesian)
- ͵ϡϟθ
- Chinese
- 九十九萬九千
- Chinese (financial)
- 玖拾玖萬玖仟
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 999000, here are decompositions:
- 11 + 998989 = 999000
- 17 + 998983 = 999000
- 31 + 998969 = 999000
- 43 + 998957 = 999000
- 53 + 998947 = 999000
- 59 + 998941 = 999000
- 73 + 998927 = 999000
- 83 + 998917 = 999000
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.62.88.
- Address
- 0.15.62.88
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.62.88
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 999,000 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°.