Number

395

395 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 395 AD

Calendar year

Year 395 (CCCXCV) was a common year starting on Monday of the Julian calendar.

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Historical context — 395 BC

Calendar year

Year 395 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback 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: Sunday
January 1, 395
Ended on: Sunday
December 31, 395
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 390s
390–399
Century: 4th century
301–400
Millennium: 1st millennium
1–1000
Years ago: 1,631
1631 years before 2026.

In other calendars

Hebrew: 4155 / 4156 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Wood zodiac:Goat
Sexagenary cycle position 32 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 938 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 387 / 388 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 317 / 316 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 17
Digit product: 135
Digital root: 8
Palindrome: No
Bit width: 9 bits
Reversed: 593
Recamán's sequence: a(2,462) = 395
Square (n²): 156,025
Cube (n³): 61,629,875
Divisor count: 4
σ(n) — sum of divisors: 480
φ(n) — Euler's totient: 312
Sum of prime factors: 84

Primality

Prime factorization: 5 × 79

Nearest primes: 389 (−6) · 397 (+2)

Divisors & multiples

All divisors (4)

1 · 5 · 79 · 395

Aliquot sum (sum of proper divisors): 85

Factor pairs (a × b = 395)

1 × 395

5 × 79

First multiples

395 · 790 (double) · 1,185 · 1,580 · 1,975 · 2,370 · 2,765 · 3,160 · 3,555 · 3,950

Sums & aliquot sequence

As consecutive integers: 197 + 198 77 + 78 + 79 + 80 + 81 35 + 36 + … + 44

Aliquot sequence: 395 → 85 → 23 → 1 → 0 — terminates at zero

Representations

In words: three hundred ninety-five
Ordinal: 395th
Roman numeral: CCCXCV
Binary: 110001011
Octal: 613
Hexadecimal: 0x18B
Base64: AYs=
One's complement: 65,140 (16-bit)

In other bases

ternary (3) 112122

quaternary (4) 12023

quinary (5) 3040

senary (6) 1455

septenary (7) 1103

nonary (9) 478

undecimal (11) 32a

duodecimal (12) 28b

tridecimal (13) 245

tetradecimal (14) 203

pentadecimal (15) 1b5

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): τϟεʹ
Mayan (base 20): 𝋳·𝋯
Chinese: 三百九十五
Chinese (financial): 參佰玖拾伍

In other modern scripts

Eastern Arabic ٣٩٥ Devanagari ३९५ Bengali ৩৯৫ Tamil ௩௯௫ Thai ๓๙๕ Tibetan ༣༩༥ Khmer ៣៩៥ Lao ໓໙໕ Burmese ၃၉၅

Digit at this position in famous constants

π — Pi (π): Digit 395 = 5
e — Euler's number (e): Digit 395 = 3
φ — Golden ratio (φ): Digit 395 = 5
√2 — Pythagoras's (√2): Digit 395 = 4
ln 2 — Natural log of 2: Digit 395 = 5
γ — Euler-Mascheroni (γ): Digit 395 = 8

Also seen as

Unicode codepoint

Latin Capital Letter D With Topbar

U+018B

Uppercase letter (Lu)

UTF-8 encoding: C6 8B (2 bytes).

Lookup U+018B on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00018B

RGB(0, 1, 139)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.139.

Address: 0.0.1.139
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.139

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