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Number

379

379 is a prime, odd, a calendar year.

379 (three hundred seventy-nine) is an odd 3-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in Roman numerals it is CCCLXXIX and in binary, 101111011.

Arithmetic Number Ascending Digits Chen Prime Cousin Prime Cube-Free Deficient Number Happy Number Lazy Caterer Number Odious Number Pernicious Number Prime Recamán's Sequence Right-Truncatable Prime Sexy Prime Squarefree Year

Interestingness

12 notable facts · grade A
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Historical context — 379 AD

Calendar year

Year 379 (CCCLXXIX) was a common year starting on Tuesday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Historical context — 379 BC

Calendar year

Year 379 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year
365
ISO weeks
52
Started on
Monday
January 1, 379
Ended on
Monday
December 31, 379
Friday the 13ths
2
2 Friday the 13ths this year.
Decade
370s
370–379
Century
4th century
301–400
Millennium
1st millennium
1–1000
Years ago
1,647
1647 years before 2026.

In other calendars

Hebrew
4139 / 4140 AM
Rosh Hashanah falls in September/October.
Chinese
Year of the zodiac:Earth zodiac:Rabbit
Sexagenary cycle position 16 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era
922 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian
371 / 372 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka)
301 / 300 Saka
Indian national calendar; year starts in March.

Properties

Parity
Odd
Digit count
3
Digit sum
19
Digit product
189
Digital root
1
Palindrome
No
Bit width
9 bits
Reversed
973
Recamán's sequence
a(114) = 379
Square (n²)
143,641
Cube (n³)
54,439,939
Divisor count
2
σ(n) — sum of divisors
380
φ(n) — Euler's totient
378

Primality

379 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 379
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 379)
1 × 379
First multiples
379 · 758 (double) · 1,137 · 1,516 · 1,895 · 2,274 · 2,653 · 3,032 · 3,411 · 3,790

Sums & aliquot sequence

As consecutive integers: 189 + 190

Continued fraction of √n

√379 = [19; (2, 7, 3, 2, 2, 6, 12, 1, 4, 1, 1, 1, 3, 4, 19, 4, 3, 1, 1, 1, 4, 1, 12, 6, …)]

Period length 30 — the block in parentheses repeats forever.

Representations

In words
three hundred seventy-nine
Ordinal
379th
Roman numeral
CCCLXXIX
Binary
101111011
Octal
573
Hexadecimal
0x17B
Base64
AXs=
One's complement
65,156 (16-bit)
Scientific notation
3.79 × 10²
As a duration
379 s = 6 minutes, 19 seconds
In other bases
ternary (3) 112001
quaternary (4) 11323
quinary (5) 3004
senary (6) 1431
septenary (7) 1051
nonary (9) 461
undecimal (11) 315
duodecimal (12) 277
tridecimal (13) 232
tetradecimal (14) 1d1
pentadecimal (15) 1a4
Palindromic in base 13, base 14

As an angle

379° = 1 × 360° + 19°
19° ≈ 0.332 rad
Compass bearing: NNE (north-northeast)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
τοθʹ
Mayan (base 20)
𝋲·𝋳
Chinese
三百七十九
Chinese (financial)
參佰柒拾玖
In other modern scripts
Eastern Arabic ٣٧٩ Devanagari ३७९ Bengali ৩৭৯ Tamil ௩௭௯ Thai ๓๗๙ Tibetan ༣༧༩ Khmer ៣៧៩ Lao ໓໗໙ Burmese ၃၇၉

Digit at this position in famous constants

π — Pi (π)
Digit 379 = 6
e — Euler's number (e)
Digit 379 = 7
φ — Golden ratio (φ)
Digit 379 = 8
√2 — Pythagoras's (√2)
Digit 379 = 7
ln 2 — Natural log of 2
Digit 379 = 2
γ — Euler-Mascheroni (γ)
Digit 379 = 3

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 373 (gap of 6)
  • Next prime: 383 (gap of 4)

Pair status: cousin with 383, sexy with 373.

Unicode codepoint
Ż
Latin Capital Letter Z With Dot Above
U+017B
Uppercase letter (Lu)

UTF-8 encoding: C5 BB (2 bytes).

Hex color
#00017B
RGB(0, 1, 123)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.123.

Address
0.0.1.123
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.1.123

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 379 Hz is closest to:

  • Concert pitch (A4 = 440 Hz): F♯4 (370 Hz, +42¢)
  • Scientific pitch (C4 = 256 Hz): G4 (383.6 Hz, -21¢)
  • Baroque pitch (A4 = 415 Hz): G4 (369.7 Hz, +43¢)

Related reading

  • Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
  • Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.