Properties of the Number 47809

Forty-Seven Thousand Eight Hundred Nine

Basics

Value: 47808 → 47809 → 47810

Parity: odd

Prime: Yes

Previous Prime: 47807

Next Prime: 47819

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 47809

Divisors: 1, 47809

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011101011000001

Octal: 135301

Duodecimal: 23801

Hexadecimal: bac1

Square: 2285700481

Square Root: 218.65269264292172

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

Primes from merging of 5 successive digits in decimal expansion of the Golden Ratio, (1+sqrt(5))/2. A103809

Primes p such that A001175(p) = (p-1)/8. A308793

Coefficients in the expansion of C²/B³, in Watson's notation of page 106. A160462

Primes p such that, if q is the next prime, p + q² is a prime times a power of 10. A352837

Primes p such that if q is the next prime, the sum (with multiplicity) of prime factors of p² + q² is a square. A359443

a(n) counts different values of i²+j²+k² <= n² or number of distances from the origin to all integer points inside a sphere of radius n. A47809