2,401
2,401 is a composite number, odd.
2,401 (two thousand four hundred one) is an odd 4-digit number. It is a composite number with 5 divisors, and factors as 7⁴. It is a perfect square (49²). Written other ways, in Roman numerals it is MMCDI and in binary, 100101100001.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 7
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 1,042
- Recamán's sequence
- a(98,670) = 2,401
- Square (n²)
- 5,764,801
- Cube (n³)
- 13,841,287,201
- Square root (√n)
- 49
- Divisor count
- 5
- σ(n) — sum of divisors
- 2,801
- φ(n) — Euler's totient
- 2,058
- Sum of prime factors
- 28
Primality
Prime factorization: 7 4
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two thousand four hundred one
- Ordinal
- 2401st
- Roman numeral
- MMCDI
- Binary
- 100101100001
- Octal
- 4541
- Hexadecimal
- 0x961
- Base64
- CWE=
- One's complement
- 63,134 (16-bit)
- Scientific notation
- 2.401 × 10³
- As a duration
- 2,401 s = 40 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵βυαʹ
- Mayan (base 20)
- 𝋦·𝋠·𝋡
- Chinese
- 二千四百零一
- Chinese (financial)
- 貳仟肆佰零壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,401 = 6
- e — Euler's number (e)
- Digit 2,401 = 8
- φ — Golden ratio (φ)
- Digit 2,401 = 5
- √2 — Pythagoras's (√2)
- Digit 2,401 = 9
- ln 2 — Natural log of 2
- Digit 2,401 = 3
- γ — Euler-Mascheroni (γ)
- Digit 2,401 = 9
Also seen as
UTF-8 encoding: E0 A5 A1 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.9.97.
- Address
- 0.0.9.97
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.9.97
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 2,401 Hz is closest to:
- Concert pitch (A4 = 440 Hz): D7 (2349.3 Hz, +38¢)
- Scientific pitch (C4 = 256 Hz): D♯7 (2435.5 Hz, -25¢)
- Baroque pitch (A4 = 415 Hz): D♯7 (2347.6 Hz, +39¢)
The digit sequence 2401 first appears in π at position 1,196 of the decimal expansion (the 1,196ordinal-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.