Number

44

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

Arithmetic Number Deficient Number Happy Number Odious Number Palindrome Pernicious Number Recamán's Sequence Repdigit Tribonacci Number Year

Historical context — 44 AD

Calendar year

AD 44 (XLIV) was a leap year starting on Wednesday of the Julian calendar.

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

Notable events — 44 BC

Mar 15 Julius Caesar is assassinated on the Ides of March by a senatorial conspiracy.

Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0

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, 44
Ended on: Saturday
December 31, 44
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 40s
40–49
Century: 1st century
1–100
Millennium: 1st millennium
1–1000
Years ago: 1,982
1982 years before 2026.

In other calendars

Hebrew: 3804 / 3805 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Wood zodiac:Dragon
Sexagenary cycle position 41 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 587 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 36 / 37 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): -34 / -35 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 2
Digit sum: 8
Digit product: 16
Digital root: 8
Palindrome: Yes
Bit width: 6 bits
Recamán's sequence: a(28) = 44
Square (n²): 1,936
Cube (n³): 85,184
Divisor count: 6
σ(n) — sum of divisors: 84
φ(n) — Euler's totient: 20
Sum of prime factors: 15

Primality

Prime factorization: 2 ² × 11

Nearest primes: 43 (−1) · 47 (+3)

Divisors & multiples

All divisors (6)

1 · 2 · 4 · 11 · 22 (half) · 44

Aliquot sum (sum of proper divisors): 40

Factor pairs (a × b = 44)

1 × 44

2 × 22

4 × 11

First multiples

44 · 88 (double) · 132 · 176 · 220 · 264 · 308 · 352 · 396 · 440

Sums & aliquot sequence

As consecutive integers: 2 + 3 + … + 9

Aliquot sequence: 44 → 40 → 50 → 43 → 1 → 0 — terminates at zero

Representations

In words: forty-four
Ordinal: 44th
Roman numeral: XLIV
Binary: 101100
Octal: 54
Hexadecimal: 0x2C
Base64: LA==
One's complement: 211 (8-bit)

In other bases

ternary (3) 1122

quaternary (4) 230

quinary (5) 134

senary (6) 112

septenary (7) 62

nonary (9) 48

undecimal (11) 40

duodecimal (12) 38

tridecimal (13) 35

tetradecimal (14) 32

pentadecimal (15) 2e

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
Greek (Milesian): μδʹ
Mayan (base 20): 𝋢·𝋤
Chinese: 四十四
Chinese (financial): 肆拾肆

In other modern scripts

Eastern Arabic ٤٤ Devanagari ४४ Bengali ৪৪ Tamil ௪௪ Thai ๔๔ Tibetan ༤༤ Khmer ៤៤ Lao ໔໔ Burmese ၄၄

Digit at this position in famous constants

π — Pi (π): Digit 44 = 3
e — Euler's number (e): Digit 44 = 0
φ — Golden ratio (φ): Digit 44 = 1
√2 — Pythagoras's (√2): Digit 44 = 8
ln 2 — Natural log of 2: Digit 44 = 1
γ — Euler-Mascheroni (γ): Digit 44 = 3

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 44, here are decompositions:

3 + 41 = 44
7 + 37 = 44
13 + 31 = 44

ASCII character

As an ASCII codepoint, 44 is ,. Printable ASCII character ,.

Hex color

#00002C

RGB(0, 0, 44)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.44.

Address: 0.0.0.44
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.44

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

US numbered highway

Matches numbered highway designation:

I-44 — Wichita Falls, TX to St. Louis, MO.

Interstate 44 on Wikipedia ↗