Number

1,441

1,441 is a composite number, odd, a calendar year.

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

Historical context — 1441 AD

Calendar year

1441 (MCDXLI) was a common year starting on Sunday of the Julian calendar, the 1441st year of the Common Era (CE) and Anno Domini (AD) designations, the 441st year of the 2nd millennium, the 41st year of the 15th century, and the 2nd year of the 1440s decade.

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: Friday
January 1, 1441
Ended on: Friday
December 31, 1441
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 1440s
1440–1449
Century: 15th century
1401–1500
Millennium: 2nd millennium
1001–2000
Years ago: 585
585 years before 2026.

In other calendars

Hebrew: 5201 / 5202 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 844 / 845 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Metal zodiac:Rooster
Sexagenary cycle position 58 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1984 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 819 / 820 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1433 / 1434 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1363 / 1362 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 4
Digit sum: 10
Digit product: 16
Digital root: 1
Palindrome: Yes
Bit width: 11 bits
Recamán's sequence: a(1,678) = 1,441
Square (n²): 2,076,481
Cube (n³): 2,992,209,121
Divisor count: 4
σ(n) — sum of divisors: 1,584
φ(n) — Euler's totient: 1,300
Sum of prime factors: 142

Primality

Prime factorization: 11 × 131

Nearest primes: 1,439 (−2) · 1,447 (+6)

Divisors & multiples

All divisors (4)

1 · 11 · 131 · 1441

Aliquot sum (sum of proper divisors): 143

Factor pairs (a × b = 1,441)

1 × 1441

11 × 131

First multiples

1,441 · 2,882 (double) · 4,323 · 5,764 · 7,205 · 8,646 · 10,087 · 11,528 · 12,969 · 14,410

Sums & aliquot sequence

As consecutive integers: 720 + 721 126 + 127 + … + 136 55 + 56 + … + 76

Aliquot sequence: 1,441 → 143 → 25 → 6 → 6 — reaches a perfect number

Representations

In words: one thousand four hundred forty-one
Ordinal: 1441st
Roman numeral: MCDXLI
Binary: 10110100001
Octal: 2641
Hexadecimal: 0x5A1
Base64: BaE=
One's complement: 64,094 (16-bit)

In other bases

ternary (3) 1222101

quaternary (4) 112201

quinary (5) 21231

senary (6) 10401

septenary (7) 4126

nonary (9) 1871

undecimal (11) 10a0

duodecimal (12) a01

tridecimal (13) 86b

tetradecimal (14) 74d

pentadecimal (15) 661

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹𒁹 𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵αυμαʹ
Mayan (base 20): 𝋣·𝋬·𝋡
Chinese: 一千四百四十一
Chinese (financial): 壹仟肆佰肆拾壹

In other modern scripts

Eastern Arabic ١٤٤١ Devanagari १४४१ Bengali ১৪৪১ Tamil ௧௪௪௧ Thai ๑๔๔๑ Tibetan ༡༤༤༡ Khmer ១៤៤១ Lao ໑໔໔໑ Burmese ၁၄၄၁

Digit at this position in famous constants

π — Pi (π): Digit 1,441 = 0
e — Euler's number (e): Digit 1,441 = 8
φ — Golden ratio (φ): Digit 1,441 = 2
√2 — Pythagoras's (√2): Digit 1,441 = 4
ln 2 — Natural log of 2: Digit 1,441 = 2
γ — Euler-Mascheroni (γ): Digit 1,441 = 8

Also seen as

Unicode codepoint

Hebrew Accent Pazer

U+05A1

Non-spacing mark (Mn)

UTF-8 encoding: D6 A1 (2 bytes).

Lookup U+05A1 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0005A1

RGB(0, 5, 161)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.161.

Address: 0.0.5.161
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.5.161

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

Position in π

The digit sequence 1441 first appears in π at position 1,638 of the decimal expansion (the 1,638ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 1441 on Pi Search ↗