Properties of the Number -399168

Three Hundred Ninety-Nine Thousand One Hundred Sixty-Eight

Basics

Value: -399169 → -399168 → -399167

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 ⁶ × 3 ⁴ × 7 × 11

Divisors: 1, 2, 3, 4, 6, 7, 8, 9, 11, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100001011101000000

Octal: -1413500

Duodecimal: -173000

Hexadecimal: -61740

Square: 159335092224

Square Root: 631.7974358922328

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = ∑_{k = 1..n} (-1)^n+k * k³ * binomial(n,k)². A361719

a(n) = n! with trailing zeros omitted. A4154

The sum of the two numbers in an amicable pair, A002025(n) + A002046(n). A180164

a(n) is the denominator of the probability that a particular one of the A335573(n+1) fixed polyominoes corresponding to the free polyomino with binary code A246521(n+1) appears in the version of the Eden growth model described in A367671 when n square cells have been added. A367676

a(n) = 24·n*p(n) = 24·n*A000041(n). A183009

The sum (in nondecreasing order) of the two numbers in an amicable pair. A259953

Denominators of the fractions f(n) such that (6/π²)*f(n) is the asymptotic density of the numbers k with A280292(k) = sopfr(k) - sopf(k) = n. A338560

a(n) is the least number with exactly n divisors of the form 5·k+1. A364586

a(n) is the least number with exactly n divisors of the form 5·k+2. A364598

a(n) is the least number with exactly n divisors of the form 5·k+4. A364600