Number

219

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

Arithmetic Number Deficient Number Evil Number Happy Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 219 AD

Calendar year

Year 219 (CCXIX) was a common year starting on Friday of the Julian calendar.

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Historical context — 219 BC

Calendar year

Year 219 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: Friday
January 1, 219
Ended on: Friday
December 31, 219
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 210s
210–219
Century: 3rd century
201–300
Millennium: 1st millennium
1–1000
Years ago: 1,807
1807 years before 2026.

In other calendars

Hebrew: 3979 / 3980 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Earth zodiac:Pig
Sexagenary cycle position 36 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 762 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 211 / 212 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 141 / 140 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 12
Digit product: 18
Digital root: 3
Palindrome: No
Bit width: 8 bits
Reversed: 912
Recamán's sequence: a(2,594) = 219
Square (n²): 47,961
Cube (n³): 10,503,459
Divisor count: 4
σ(n) — sum of divisors: 296
φ(n) — Euler's totient: 144
Sum of prime factors: 76

Primality

Prime factorization: 3 × 73

Nearest primes: 211 (−8) · 223 (+4)

Divisors & multiples

All divisors (4)

1 · 3 · 73 · 219

Aliquot sum (sum of proper divisors): 77

Factor pairs (a × b = 219)

1 × 219

3 × 73

First multiples

219 · 438 (double) · 657 · 876 · 1,095 · 1,314 · 1,533 · 1,752 · 1,971 · 2,190

Sums & aliquot sequence

As consecutive integers: 109 + 110 72 + 73 + 74 34 + 35 + 36 + 37 + 38 + 39

Aliquot sequence: 219 → 77 → 19 → 1 → 0 — terminates at zero

Representations

In words: two hundred nineteen
Ordinal: 219th
Roman numeral: CCXIX
Binary: 11011011
Octal: 333
Hexadecimal: 0xDB
Base64: 2w==
One's complement: 36 (8-bit)

In other bases

ternary (3) 22010

quaternary (4) 3123

quinary (5) 1334

senary (6) 1003

septenary (7) 432

nonary (9) 263

undecimal (11) 18a

duodecimal (12) 163

tridecimal (13) 13b

tetradecimal (14) 119

pentadecimal (15) e9

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): σιθʹ
Mayan (base 20): 𝋪·𝋳
Chinese: 二百一十九
Chinese (financial): 貳佰壹拾玖

In other modern scripts

Eastern Arabic ٢١٩ Devanagari २१९ Bengali ২১৯ Tamil ௨௧௯ Thai ๒๑๙ Tibetan ༢༡༩ Khmer ២១៩ Lao ໒໑໙ Burmese ၂၁၉

Digit at this position in famous constants

π — Pi (π): Digit 219 = 4
e — Euler's number (e): Digit 219 = 5
φ — Golden ratio (φ): Digit 219 = 1
√2 — Pythagoras's (√2): Digit 219 = 7
ln 2 — Natural log of 2: Digit 219 = 2
γ — Euler-Mascheroni (γ): Digit 219 = 7

Also seen as

Unicode codepoint

Latin Capital Letter U With Circumflex

U+00DB

Uppercase letter (Lu)

UTF-8 encoding: C3 9B (2 bytes).

Lookup U+00DB on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0000DB

RGB(0, 0, 219)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.219.

Address: 0.0.0.219
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.219

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

NANP area code 219

The number 219 is an active NANP area code (North American Numbering Plan).

Primary area: Gary / Hammond
Region: Indiana
Country: United States

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 219 ↗