Properties of the Number 49809

Forty-Nine Thousand Eight Hundred Nine

Basics

Value: 49808 → 49809 → 49810

Parity: odd

Prime: No

Previous Prime: 49807

Next Prime: 49811

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 16603

Divisors: 1, 3, 16603, 49809

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100001010010001

Octal: 141221

Duodecimal: 249A9

Hexadecimal: c291

Square: 2480936481

Square Root: 223.17930011540048

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) = a(n-1) + 2·a(floor(n/2)) if n > 0, otherwise 1. A58039

a(n)=number of Farey fractions of order n that are <=1/5; cf. A049805. A49809