Properties of the Number 43995

Forty-Three Thousand Nine Hundred Ninety-Five

Basics

Value: 43994 → 43995 → 43996

Parity: odd

Prime: No

Previous Prime: 43991

Next Prime: 43997

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 7 × 419

Divisors: 1, 3, 5, 7, 15, 21, 35, 105, 419, 1257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010101111011011

Octal: 125733

Duodecimal: 21563

Hexadecimal: abdb

Square: 1935560025

Square Root: 209.74985101305793

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

Let p = n-th prime == 7 mod 8; a(n) = sum of quadratic residues mod p that are < p/2. A282039

Number of compositions of n in which the least part is even. A103420

Odd multiplicative orders of 2+-i modulo primes p == 3 (mod 4). A385217

Expansion of (1 - 2·x²)/(1 + x)⁵. Fourth column of Riordan triangle A248156. A248160

Numbers k such that 3·R_k+2 + 2·10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k. A256788

G.f. satisfies: [xⁿ] A(x)ⁿ⁺¹ = [xⁿ] A(x)ⁿ⁺² for n>1 with A'(0)=A(0)=1. A177383

Numbers k such that 7 and 8 occur juxtaposed in the base-9 representation of k but not of k+1. A43995