1,406
1,406 is a composite number, even, a calendar year.
Historical context — 1406 AD
Calendar year
Year 1406 (MCDVI) was a common year starting on Friday of the Julian 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
-
Wednesday
January 1, 1406
- Ended on
-
Wednesday
December 31, 1406
- 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
-
620
620 years before 2026.
In other calendars
- Hebrew
-
5166 / 5167 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
808 / 809 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Fire zodiac:Dog
Sexagenary cycle position 23 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1949 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
784 / 785 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1398 / 1399 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1328 / 1327 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 11
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 6,041
- Recamán's sequence
- a(8,316) = 1,406
- Square (n²)
- 1,976,836
- Cube (n³)
- 2,779,431,416
- Divisor count
- 8
- σ(n) — sum of divisors
- 2,280
- φ(n) — Euler's totient
- 648
- Sum of prime factors
- 58
Primality
Prime factorization: 2 × 19 × 37
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand four hundred six
- Ordinal
- 1406th
- Roman numeral
- MCDVI
- Binary
- 10101111110
- Octal
- 2576
- Hexadecimal
- 0x57E
- Base64
- BX4=
- One's complement
- 64,129 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αυϛʹ
- Mayan (base 20)
- 𝋣·𝋪·𝋦
- Chinese
- 一千四百零六
- Chinese (financial)
- 壹仟肆佰零陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,406 = 3
- e — Euler's number (e)
- Digit 1,406 = 0
- φ — Golden ratio (φ)
- Digit 1,406 = 0
- √2 — Pythagoras's (√2)
- Digit 1,406 = 9
- ln 2 — Natural log of 2
- Digit 1,406 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,406 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1406, here are decompositions:
- 7 + 1399 = 1406
- 79 + 1327 = 1406
- 103 + 1303 = 1406
- 109 + 1297 = 1406
- 127 + 1279 = 1406
- 157 + 1249 = 1406
- 193 + 1213 = 1406
- 277 + 1129 = 1406
Showing the first eight; more decompositions exist.
UTF-8 encoding: D5 BE (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.126.
- Address
- 0.0.5.126
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.126
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1406 first appears in π at position 4,194 of the decimal expansion (the 4,194ordinal-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.