Properties of the Number 44644

Forty-Four Thousand Six Hundred Forty-Four

Basics

Value: 44643 → 44644 → 44645

Parity: even

Prime: No

Previous Prime: 44641

Next Prime: 44647

Digit Sum: 22

Digital Root: 4

Palindrome: Yes

Factorization: 2 ² × 11161

Divisors: 1, 2, 4, 11161, 22322, 44644

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010111001100100

Octal: 127144

Duodecimal: 21A04

Hexadecimal: ae64

Square: 1993086736

Square Root: 211.29126815843574

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

Number of ways to choose a set partition of a strict integer partition of n. A294617

3-almost primes with semiprime digits (digits 4, 6, 9 only). A111494

Numbers with digits 4 and 6 only. A284634

Numbers k such that k concatenated with k+8 gives the product of two numbers which differ by 9. A116216

a(n) = smallest palindrome > a(n-1) such that a(1)*a(2)*...*a(n) - 1 is a prime. A51954

Numbers that are the sum of an emirp and its reversal in more than one way. A345408

Palindromes expressible as the sum of 4 consecutive palindromes. A46499

a(0)=1; a(n) = sigma₂(n) + sigma₃(n). A92344

a(n) = 4*(10^2·n+1-1)/9 + 2·10ⁿ. A332146

Irregular triangle T(n,k), n >= 0, 0 <= k <= 2·n+1, read by rows, where T(n,k) = [x^k] (1-x)ⁿ⁺¹ * ∑_k=0..n (2·k+1)ⁿ * x^k. A382289