1,408
1,408 is a composite number, even, a calendar year.
Historical context — 1408 AD
Calendar year
Year 1408 (MCDVIII) was a leap year starting on Sunday of the Julian calendar.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Friday
January 1, 1408
- Ended on
-
Saturday
December 31, 1408
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1400s
1400–1409
- Century
-
15th century
1401–1500
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
618
618 years before 2026.
In other calendars
- Hebrew
-
5168 / 5169 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
810 / 811 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Rat
Sexagenary cycle position 25 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1951 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
786 / 787 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1400 / 1401 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1330 / 1329 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,041
- Recamán's sequence
- a(8,312) = 1,408
- Square (n²)
- 1,982,464
- Cube (n³)
- 2,791,309,312
- Divisor count
- 16
- σ(n) — sum of divisors
- 3,060
- φ(n) — Euler's totient
- 640
- Sum of prime factors
- 25
Primality
Prime factorization: 2 7 × 11
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand four hundred eight
- Ordinal
- 1408th
- Roman numeral
- MCDVIII
- Binary
- 10110000000
- Octal
- 2600
- Hexadecimal
- 0x580
- Base64
- BYA=
- One's complement
- 64,127 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αυηʹ
- Mayan (base 20)
- 𝋣·𝋪·𝋨
- Chinese
- 一千四百零八
- Chinese (financial)
- 壹仟肆佰零捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,408 = 4
- e — Euler's number (e)
- Digit 1,408 = 6
- φ — Golden ratio (φ)
- Digit 1,408 = 4
- √2 — Pythagoras's (√2)
- Digit 1,408 = 9
- ln 2 — Natural log of 2
- Digit 1,408 = 0
- γ — Euler-Mascheroni (γ)
- Digit 1,408 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1408, here are decompositions:
- 41 + 1367 = 1408
- 47 + 1361 = 1408
- 89 + 1319 = 1408
- 101 + 1307 = 1408
- 107 + 1301 = 1408
- 131 + 1277 = 1408
- 149 + 1259 = 1408
- 179 + 1229 = 1408
Showing the first eight; more decompositions exist.
UTF-8 encoding: D6 80 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.128.
- Address
- 0.0.5.128
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.128
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1408 first appears in π at position 8,434 of the decimal expansion (the 8,434ordinal-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.