Number

249

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

Arithmetic Number Ascending Digits Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 249 AD

Calendar year

Year 249 (CCXLIX) was a common year starting on Monday of the Julian calendar.

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Historical context — 249 BC

Calendar year

Year 249 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: Monday
January 1, 249
Ended on: Monday
December 31, 249
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 240s
240–249
Century: 3rd century
201–300
Millennium: 1st millennium
1–1000
Years ago: 1,777
1777 years before 2026.

In other calendars

Hebrew: 4009 / 4010 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Earth zodiac:Snake
Sexagenary cycle position 6 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 792 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 241 / 242 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 171 / 170 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 15
Digit product: 72
Digital root: 6
Palindrome: No
Bit width: 8 bits
Reversed: 942
Recamán's sequence: a(245) = 249
Square (n²): 62,001
Cube (n³): 15,438,249
Divisor count: 4
σ(n) — sum of divisors: 336
φ(n) — Euler's totient: 164
Sum of prime factors: 86

Primality

Prime factorization: 3 × 83

Nearest primes: 241 (−8) · 251 (+2)

Divisors & multiples

All divisors (4)

1 · 3 · 83 · 249

Aliquot sum (sum of proper divisors): 87

Factor pairs (a × b = 249)

1 × 249

3 × 83

First multiples

249 · 498 (double) · 747 · 996 · 1,245 · 1,494 · 1,743 · 1,992 · 2,241 · 2,490

Sums & aliquot sequence

As consecutive integers: 124 + 125 82 + 83 + 84 39 + 40 + 41 + 42 + 43 + 44

Aliquot sequence: 249 → 87 → 33 → 15 → 9 → 4 → 3 → 1 → 0 — terminates at zero

Representations

In words: two hundred forty-nine
Ordinal: 249th
Roman numeral: CCXLIX
Binary: 11111001
Octal: 371
Hexadecimal: 0xF9
Base64: +Q==
One's complement: 6 (8-bit)

In other bases

ternary (3) 100020

quaternary (4) 3321

quinary (5) 1444

senary (6) 1053

septenary (7) 504

nonary (9) 306

undecimal (11) 207

duodecimal (12) 189

tridecimal (13) 162

tetradecimal (14) 13b

pentadecimal (15) 119

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): σμθʹ
Mayan (base 20): 𝋬·𝋩
Chinese: 二百四十九
Chinese (financial): 貳佰肆拾玖

In other modern scripts

Eastern Arabic ٢٤٩ Devanagari २४९ Bengali ২৪৯ Tamil ௨௪௯ Thai ๒๔๙ Tibetan ༢༤༩ Khmer ២៤៩ Lao ໒໔໙ Burmese ၂၄၉

Digit at this position in famous constants

π — Pi (π): Digit 249 = 0
e — Euler's number (e): Digit 249 = 6
φ — Golden ratio (φ): Digit 249 = 9
√2 — Pythagoras's (√2): Digit 249 = 9
ln 2 — Natural log of 2: Digit 249 = 3
γ — Euler-Mascheroni (γ): Digit 249 = 0

Also seen as

Unicode codepoint

Latin Small Letter U With Grave

U+00F9

Lowercase letter (Ll)

UTF-8 encoding: C3 B9 (2 bytes).

Lookup U+00F9 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0000F9

RGB(0, 0, 249)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.249.

Address: 0.0.0.249
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.249

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

NANP area code 249

The number 249 is an active NANP area code (North American Numbering Plan).

Primary area: Northeastern Ontario
Region: Ontario
Country: Canada

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 249 ↗