Number

441

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

Deficient Number Evil Number Harshad / Niven Perfect Square Powerful Number Recamán's Sequence Year

Historical context — 441 AD

Calendar year

Year 441 (CDXLI) was a common year starting on Wednesday of the Julian calendar.

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Historical context — 441 BC

Calendar year

Year 441 BC was a year of the pre-Julian Roman calendar.

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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: Tuesday
January 1, 441
Ended on: Tuesday
December 31, 441
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 440s
440–449
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,585
1585 years before 2026.

In other calendars

Hebrew: 4201 / 4202 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Metal zodiac:Snake
Sexagenary cycle position 18 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 984 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 433 / 434 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 363 / 362 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 9
Digit product: 16
Digital root: 9
Palindrome: No
Bit width: 9 bits
Reversed: 144
Recamán's sequence: a(4,761) = 441
Square (n²): 194,481
Cube (n³): 85,766,121
Square root (√n): 21
Divisor count: 9
σ(n) — sum of divisors: 741
φ(n) — Euler's totient: 252
Sum of prime factors: 20

Primality

Prime factorization: 3 ² × 7 ²

Nearest primes: 439 (−2) · 443 (+2)

Divisors & multiples

All divisors (9)

1 · 3 · 7 · 9 · 21 · 49 · 63 · 147 · 441

Aliquot sum (sum of proper divisors): 300

Factor pairs (a × b = 441)

1 × 441

3 × 147

7 × 63

9 × 49

21 × 21

First multiples

441 · 882 (double) · 1,323 · 1,764 · 2,205 · 2,646 · 3,087 · 3,528 · 3,969 · 4,410

Sums & aliquot sequence

As a sum of two squares: 0² + 21²

As consecutive integers: 220 + 221 146 + 147 + 148 71 + 72 + 73 + 74 + 75 + 76 60 + 61 + … + 66

Aliquot sequence: 441 → 300 → 568 → 512 → 511 → 81 → 40 → 50 → 43 → 1 → 0 — terminates at zero

Representations

In words: four hundred forty-one
Ordinal: 441st
Roman numeral: CDXLI
Binary: 110111001
Octal: 671
Hexadecimal: 0x1B9
Base64: Abk=
One's complement: 65,094 (16-bit)

In other bases

ternary (3) 121100

quaternary (4) 12321

quinary (5) 3231

senary (6) 2013

septenary (7) 1200

nonary (9) 540

undecimal (11) 371

duodecimal (12) 309

tridecimal (13) 27c

tetradecimal (14) 237

pentadecimal (15) 1e6

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): υμαʹ
Mayan (base 20): 𝋡·𝋢·𝋡
Chinese: 四百四十一
Chinese (financial): 肆佰肆拾壹

In other modern scripts

Eastern Arabic ٤٤١ Devanagari ४४१ Bengali ৪৪১ Tamil ௪௪௧ Thai ๔๔๑ Tibetan ༤༤༡ Khmer ៤៤១ Lao ໔໔໑ Burmese ၄၄၁

Digit at this position in famous constants

π — Pi (π): Digit 441 = 9
e — Euler's number (e): Digit 441 = 2
φ — Golden ratio (φ): Digit 441 = 7
√2 — Pythagoras's (√2): Digit 441 = 4
ln 2 — Natural log of 2: Digit 441 = 5
γ — Euler-Mascheroni (γ): Digit 441 = 2

Also seen as

Unicode codepoint

Latin Small Letter Ezh Reversed

U+01B9

Lowercase letter (Ll)

UTF-8 encoding: C6 B9 (2 bytes).

Lookup U+01B9 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0001B9

RGB(0, 1, 185)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.185.

Address: 0.0.1.185
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.185

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

NANP area code 441

The number 441 is an active NANP area code (North American Numbering Plan).

Primary area: Statewide
Region: Bermuda
Country: Bermuda

Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.

Look up area code 441 ↗