Properties of the Number 49909

Forty-Nine Thousand Nine Hundred Nine

Basics

Value: 49908 → 49909 → 49910

Parity: odd

Prime: No

Previous Prime: 49891

Next Prime: 49919

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 29 × 1721

Divisors: 1, 29, 1721, 49909

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100001011110101

Octal: 141365

Duodecimal: 24A71

Hexadecimal: c2f5

Square: 2490908281

Square Root: 223.40322289528413

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

Row sums of triangle A118045; also equals a bisection of A118037, which is the antidiagonal sums of triangle A118032. A118049

Antidiagonal sums of triangle A118032, where the row sums of the matrix square of A118032 forms a bisection of this sequence. A118037

A006005 (shifted) convolved with all of its regularly "aerated" variants. A161993

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 17. A31605

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = 2^p+1 + 2 - n and p is the smallest integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1, a(2) = 2, and a(3) = 3. A49909