539
539 is a composite number, odd, a calendar year.
539 (five hundred thirty-nine) is an odd 3-digit number. It is a composite number with 6 divisors, and factors as 7² × 11. Written other ways, in Roman numerals it is DXXXIX and in binary, 1000011011.
Interestingness
Historical context — 539 AD
Calendar year
Year 539 (DXXXIX) was a common year of the Julian calendar.
Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →
Notable events — 539 BC
- Undated Cyrus the Great of Persia captures Babylon, ending Neo-Babylonian rule.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 539
- Ended on
-
Thursday
December 31, 539
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
530s
530–539
- Century
-
6th century
501–600
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,487
1487 years before 2026.
In other calendars
- Hebrew
-
4299 / 4300 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Earth zodiac:Goat
Sexagenary cycle position 56 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1082 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
531 / 532 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
461 / 460 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 7 2 × 11
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√539 = [23; (4, 1, 1, 1, 1, 1, 4, 46)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- five hundred thirty-nine
- Ordinal
- 539th
- Roman numeral
- DXXXIX
- Binary
- 1000011011
- Octal
- 1033
- Hexadecimal
- 0x21B
- Base64
- Ahs=
- One's complement
- 64,996 (16-bit)
- Scientific notation
- 5.39 × 10²
- As a duration
- 539 s = 8 minutes, 59 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- φλθʹ
- Mayan (base 20)
- 𝋡·𝋦·𝋳
- Chinese
- 五百三十九
- Chinese (financial)
- 伍佰參拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 539 = 7
- e — Euler's number (e)
- Digit 539 = 1
- φ — Golden ratio (φ)
- Digit 539 = 5
- √2 — Pythagoras's (√2)
- Digit 539 = 6
- ln 2 — Natural log of 2
- Digit 539 = 6
- γ — Euler-Mascheroni (γ)
- Digit 539 = 2
Also seen as
UTF-8 encoding: C8 9B (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.27.
- Address
- 0.0.2.27
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.2.27
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 539 is an active NANP area code (North American Numbering Plan).
- Primary area
- Tulsa
- Region
- Oklahoma
- 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.
Heard as a frequency, 539 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯5 (554.4 Hz, -49¢ — about midway to C5)
- Scientific pitch (C4 = 256 Hz): C♯5 (542.4 Hz, -11¢)
- Baroque pitch (A4 = 415 Hz): D5 (554 Hz, -47¢ — about midway to C♯5)
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.