Properties of the Number 43981

Forty-Three Thousand Nine Hundred Eighty-One

Basics

Value: 43980 → 43981 → 43982

Parity: odd

Prime: No

Previous Prime: 43973

Next Prime: 43987

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 61 × 103

Divisors: 1, 7, 61, 103, 427, 721, 6283, 43981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010101111001101

Octal: 125715

Duodecimal: 21551

Hexadecimal: abcd

Square: 1934328361

Square Root: 209.71647527078076

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) = ∑_{1 <= x₁, x₂, x₃, x₄ <= n} ( n/gcd(x₁, x₂, x₃, x₄, n) )². A372963

Complete list of numbers that take three steps to collapse to a single digit in base 3 (written in base 10). A253057

Number of partitions satisfying cn(0,5) < cn(1,5) + cn(4,5) + cn(2,5) + cn(3,5). A39848

Numbers with hexadecimal representation A, AB, ABC, ..., ABCDEFA, ABCDEFAB, ... A346458

Number of partitions of n into at most 6 parts. A1402

Numbers k such that 3 and 4 occur juxtaposed in the base-9 representation of k but not of k+1. A43981