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4,095

4,095 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

4,095 (four thousand ninety-five) is an odd 4-digit number. It is a composite number with 24 divisors, and factors as 3² × 5 × 7 × 13. Its proper divisors sum to 4,641, more than the number itself, making it an abundant number. It is the 90th triangular number. Written other ways, in binary, 111111111111.

Abundant Number Arithmetic Number Binary Palindrome Cube-Free Evil Number Gapful Number Recamán's Sequence Semiperfect Number Triangular

Interestingness

Properties

Parity
Odd
Digit count
4
Digit sum
18
Digit product
0
Digital root
9
Palindrome
No
Bit width
12 bits
Reversed
5,904
Recamán's sequence
a(14,201) = 4,095
Square (n²)
16,769,025
Cube (n³)
68,669,157,375
Divisor count
24
σ(n) — sum of divisors
8,736
φ(n) — Euler's totient
1,728
Sum of prime factors
31

Primality

Prime factorization: 3 2 × 5 × 7 × 13

Nearest primes: 4,093 (−2) · 4,099 (+4)

Divisors & multiples

All divisors (24)
1 · 3 · 5 · 7 · 9 · 13 · 15 · 21 · 35 · 39 · 45 · 63 · 65 · 91 · 105 · 117 · 195 · 273 · 315 · 455 · 585 · 819 · 1365 · 4095
Aliquot sum (sum of proper divisors): 4,641
Factor pairs (a × b = 4,095)
1 × 4095
3 × 1365
5 × 819
7 × 585
9 × 455
13 × 315
15 × 273
21 × 195
35 × 117
39 × 105
45 × 91
63 × 65
First multiples
4,095 · 8,190 (double) · 12,285 · 16,380 · 20,475 · 24,570 · 28,665 · 32,760 · 36,855 · 40,950

Sums & aliquot sequence

As consecutive integers: 2,047 + 2,048 1,364 + 1,365 + 1,366 817 + 818 + 819 + 820 + 821 680 + 681 + 682 + 683 + 684 + 685
Aliquot sequence: 4,095 4,641 3,423 1,825 469 75 49 8 7 1 0 — terminates at zero

Continued fraction of √n

√4,095 = [63; (1, 126)]

Period length 2 — the block in parentheses repeats forever.

Representations

In words
four thousand ninety-five
Ordinal
4095th
Binary
111111111111
Octal
7777
Hexadecimal
0xFFF
Base64
D/8=
One's complement
61,440 (16-bit)
Scientific notation
4.095 × 10³
As a duration
4,095 s = 1 hour, 8 minutes, 15 seconds
In other bases
ternary (3) 12121200
quaternary (4) 333333
quinary (5) 112340
senary (6) 30543
septenary (7) 14640
nonary (9) 5550
undecimal (11) 3093
duodecimal (12) 2453
tridecimal (13) 1b30
tetradecimal (14) 16c7
pentadecimal (15) 1330
Palindromic in base 2, base 4, base 8, base 16

As an angle

4,095° = 11 × 360° + 135°
135° ≈ 2.356 rad
Compass bearing: SE (southeast)

Historical numeral systems

Babylonian (base 60)
𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵δϟεʹ
Mayan (base 20)
𝋪·𝋤·𝋯
Chinese
四千零九十五
Chinese (financial)
肆仟零玖拾伍
In other modern scripts
Eastern Arabic ٤٠٩٥ Devanagari ४०९५ Bengali ৪০৯৫ Tamil ௪௦௯௫ Thai ๔๐๙๕ Tibetan ༤༠༩༥ Khmer ៤០៩៥ Lao ໔໐໙໕ Burmese ၄၀၉၅

Digit at this position in famous constants

π — Pi (π)
Digit 4,095 = 1
e — Euler's number (e)
Digit 4,095 = 2
φ — Golden ratio (φ)
Digit 4,095 = 7
√2 — Pythagoras's (√2)
Digit 4,095 = 7
ln 2 — Natural log of 2
Digit 4,095 = 7
γ — Euler-Mascheroni (γ)
Digit 4,095 = 4

Also seen as

Hex color
#000FFF
RGB(0, 15, 255)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.15.255.

Address
0.0.15.255
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.15.255

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

Musical pitch

Heard as a frequency, 4,095 Hz is closest to:

  • Concert pitch (A4 = 440 Hz): C8 (4186 Hz, -38¢)
  • Scientific pitch (C4 = 256 Hz): C8 (4096 Hz, exact)
  • Baroque pitch (A4 = 415 Hz): C♯8 (4182.9 Hz, -37¢)
Position in π

The digit sequence 4095 first appears in π at position 14,181 of the decimal expansion (the 14,181ordinal-suffix:st 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.

Related reading

  • Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
  • Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.