Properties of the Number 49905

Forty-Nine Thousand Nine Hundred Five

Basics

Value: 49904 → 49905 → 49906

Parity: odd

Prime: No

Previous Prime: 49891

Next Prime: 49919

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 1109

Divisors: 1, 3, 5, 9, 15, 45, 1109, 3327, 5545, 9981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100001011110001

Octal: 141361

Duodecimal: 24A69

Hexadecimal: c2f1

Square: 2490509025

Square Root: 223.3942702935776

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 forests with n unlabeled nodes. A5195

Denominators of average numbers of trees in a forest on n nodes. A95132

Numbers k such that k and k² use only the digits 0, 2, 4, 5 and 9. A136901

Smallest value of k for which the expression k·2^2ⁿ-1-1 is prime. A57160

Numbers k such that the binary reversal of k (A030101) is equal to the sum of the proper divisors of k (A001065). A329663

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 3, where m = 2^p+1 + 2 - n and p is the unique number such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1 and a(2) = 2. A49905