4,445
4,445 is a composite number, odd.
4,445 (four thousand four hundred forty-five) is an odd 4-digit number. It is a composite number with 8 divisors, and factors as 5 × 7 × 127. Written other ways, in hexadecimal, 0x115D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 17
- Digit product
- 320
- Digital root
- 8
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 5,444
- Recamán's sequence
- a(5,850) = 4,445
- Square (n²)
- 19,758,025
- Cube (n³)
- 87,824,421,125
- Divisor count
- 8
- σ(n) — sum of divisors
- 6,144
- φ(n) — Euler's totient
- 3,024
- Sum of prime factors
- 139
Primality
Prime factorization: 5 × 7 × 127
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√4,445 = [66; (1, 2, 26, 2, 1, 132)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- four thousand four hundred forty-five
- Ordinal
- 4445th
- Binary
- 1000101011101
- Octal
- 10535
- Hexadecimal
- 0x115D
- Base64
- EV0=
- One's complement
- 61,090 (16-bit)
- Scientific notation
- 4.445 × 10³
- As a duration
- 4,445 s = 1 hour, 14 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒌋𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵δυμεʹ
- Mayan (base 20)
- 𝋫·𝋢·𝋥
- Chinese
- 四千四百四十五
- Chinese (financial)
- 肆仟肆佰肆拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 4,445 = 1
- e — Euler's number (e)
- Digit 4,445 = 2
- φ — Golden ratio (φ)
- Digit 4,445 = 1
- √2 — Pythagoras's (√2)
- Digit 4,445 = 7
- ln 2 — Natural log of 2
- Digit 4,445 = 8
- γ — Euler-Mascheroni (γ)
- Digit 4,445 = 5
Also seen as
UTF-8 encoding: E1 85 9D (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.17.93.
- Address
- 0.0.17.93
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.17.93
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 4,445 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯8 (4434.9 Hz, +4¢)
- Scientific pitch (C4 = 256 Hz): C♯8 (4339.6 Hz, +42¢)
- Baroque pitch (A4 = 415 Hz): D8 (4431.7 Hz, +5¢)
The digit sequence 4445 first appears in π at position 9,445 of the decimal expansion (the 9,445ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.