Number

444

444 is a composite number, even, a calendar year.

Abundant Number Evil Number Harshad / Niven Palindrome Recamán's Sequence Repdigit Semiperfect Number Unlucky Number Year

Historical context — 444 AD

Calendar year

Year 444 (CDXLIV) was a leap year starting on Saturday of the Julian calendar.

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

Historical context — 444 BC

Calendar year

Year 444 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: Leap year
Divisible by 4 and not by 100; February has 29 days.
Days in year: 366
ISO weeks: 52
Started on: Friday
January 1, 444
Ended on: Saturday
December 31, 444
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 440s
440–449
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,582
1582 years before 2026.

In other calendars

Hebrew: 4204 / 4205 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Wood zodiac:Monkey
Sexagenary cycle position 21 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 987 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 436 / 437 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 366 / 365 Saka
Indian national calendar; year starts in March.

Cultural significance

Chinese unlucky

Triple-death — even more avoided than 4 alone.

Sourced from Wikipedia (Numerology, Chinese numerology, Gematria, and per-culture articles).

Properties

Parity: Even
Digit count: 3
Digit sum: 12
Digit product: 64
Digital root: 3
Palindrome: Yes
Bit width: 9 bits
Recamán's sequence: a(4,755) = 444
Square (n²): 197,136
Cube (n³): 87,528,384
Divisor count: 12
σ(n) — sum of divisors: 1,064
φ(n) — Euler's totient: 144
Sum of prime factors: 44

Primality

Prime factorization: 2 ² × 3 × 37

Nearest primes: 443 (−1) · 449 (+5)

Divisors & multiples

All divisors (12)

1 · 2 · 3 · 4 · 6 · 12 · 37 · 74 · 111 · 148 · 222 (half) · 444

Aliquot sum (sum of proper divisors): 620

Factor pairs (a × b = 444)

1 × 444

2 × 222

3 × 148

4 × 111

6 × 74

12 × 37

First multiples

444 · 888 (double) · 1,332 · 1,776 · 2,220 · 2,664 · 3,108 · 3,552 · 3,996 · 4,440

Sums & aliquot sequence

As consecutive integers: 147 + 148 + 149 52 + 53 + … + 59 7 + 8 + … + 30

Aliquot sequence: 444 → 620 → 724 → 550 → 566 → 286 → 218 → 112 → 136 → 134 → 70 → 74 → 40 → 50 → 43 → 1 → 0 — terminates at zero

Representations

In words: four hundred forty-four
Ordinal: 444th
Roman numeral: CDXLIV
Binary: 110111100
Octal: 674
Hexadecimal: 0x1BC
Base64: Abw=
One's complement: 65,091 (16-bit)

In other bases

ternary (3) 121110

quaternary (4) 12330

quinary (5) 3234

senary (6) 2020

septenary (7) 1203

nonary (9) 543

undecimal (11) 374

duodecimal (12) 310

tridecimal (13) 282

tetradecimal (14) 23a

pentadecimal (15) 1e9

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
Greek (Milesian): υμδʹ
Mayan (base 20): 𝋡·𝋢·𝋤
Chinese: 四百四十四
Chinese (financial): 肆佰肆拾肆

In other modern scripts

Eastern Arabic ٤٤٤ Devanagari ४४४ Bengali ৪৪৪ Tamil ௪௪௪ Thai ๔๔๔ Tibetan ༤༤༤ Khmer ៤៤៤ Lao ໔໔໔ Burmese ၄၄၄

Digit at this position in famous constants

π — Pi (π): Digit 444 = 0
e — Euler's number (e): Digit 444 = 5
φ — Golden ratio (φ): Digit 444 = 1
√2 — Pythagoras's (√2): Digit 444 = 2
ln 2 — Natural log of 2: Digit 444 = 9
γ — Euler-Mascheroni (γ): Digit 444 = 3

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 444, here are decompositions:

5 + 439 = 444
11 + 433 = 444
13 + 431 = 444
23 + 421 = 444
43 + 401 = 444
47 + 397 = 444
61 + 383 = 444
71 + 373 = 444

Showing the first eight; more decompositions exist.

Unicode codepoint

Latin Capital Letter Tone Five

U+01BC

Uppercase letter (Lu)

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

Lookup U+01BC on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0001BC

RGB(0, 1, 188)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.188.

Address: 0.0.1.188
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.188

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