Number

898

898 is a composite number, even, a calendar year.

Consecutive Digits Deficient Number Evil Number Flippable Palindrome Recamán's Sequence Semiprime Squarefree Year

Historical context — 898 AD

Calendar year

Year 898 (DCCCXCVIII) was a common year starting on Sunday of the Julian calendar.

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Historical context — 898 BC

Decade

This article concerns the period 899 BC – 890 BC.

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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, 898
Ended on: Wednesday
December 31, 898
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 890s
890–899
Century: 9th century
801–900
Millennium: 1st millennium
1–1000
Years ago: 1,128
1128 years before 2026.

In other calendars

Hebrew: 4658 / 4659 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 284 / 285 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Horse
Sexagenary cycle position 55 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1441 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 276 / 277 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 890 / 891 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 820 / 819 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 25
Digit product: 576
Digital root: 7
Palindrome: Yes
Bit width: 10 bits
Flips to (rotate 180°): 868
Recamán's sequence: a(411) = 898
Square (n²): 806,404
Cube (n³): 724,150,792
Divisor count: 4
σ(n) — sum of divisors: 1,350
φ(n) — Euler's totient: 448
Sum of prime factors: 451

Primality

Prime factorization: 2 × 449

Nearest primes: 887 (−11) · 907 (+9)

Divisors & multiples

All divisors (4)

1 · 2 · 449 (half) · 898

Aliquot sum (sum of proper divisors): 452

Factor pairs (a × b = 898)

1 × 898

2 × 449

First multiples

898 · 1,796 (double) · 2,694 · 3,592 · 4,490 · 5,388 · 6,286 · 7,184 · 8,082 · 8,980

Sums & aliquot sequence

As a sum of two squares: 13² + 27²

As consecutive integers: 223 + 224 + 225 + 226

Aliquot sequence: 898 → 452 → 346 → 176 → 196 → 203 → 37 → 1 → 0 — terminates at zero

Representations

In words: eight hundred ninety-eight
Ordinal: 898th
Roman numeral: DCCCXCVIII
Binary: 1110000010
Octal: 1602
Hexadecimal: 0x382
Base64: A4I=
One's complement: 64,637 (16-bit)

In other bases

ternary (3) 1020021

quaternary (4) 32002

quinary (5) 12043

senary (6) 4054

septenary (7) 2422

nonary (9) 1207

undecimal (11) 747

duodecimal (12) 62a

tridecimal (13) 541

tetradecimal (14) 482

pentadecimal (15) 3ed

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ωϟηʹ
Mayan (base 20): 𝋢·𝋤·𝋲
Chinese: 八百九十八
Chinese (financial): 捌佰玖拾捌

In other modern scripts

Eastern Arabic ٨٩٨ Devanagari ८९८ Bengali ৮৯৮ Tamil ௮௯௮ Thai ๘๙๘ Tibetan ༨༩༨ Khmer ៨៩៨ Lao ໘໙໘ Burmese ၈၉၈

Digit at this position in famous constants

π — Pi (π): Digit 898 = 7
e — Euler's number (e): Digit 898 = 7
φ — Golden ratio (φ): Digit 898 = 9
√2 — Pythagoras's (√2): Digit 898 = 9
ln 2 — Natural log of 2: Digit 898 = 5
γ — Euler-Mascheroni (γ): Digit 898 = 7

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 898, here are decompositions:

11 + 887 = 898
17 + 881 = 898
41 + 857 = 898
59 + 839 = 898
71 + 827 = 898
89 + 809 = 898
101 + 797 = 898
137 + 761 = 898

Showing the first eight; more decompositions exist.

Hex color

#000382

RGB(0, 3, 130)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.130.

Address: 0.0.3.130
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.3.130

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