Properties of the Number 47939

Forty-Seven Thousand Nine Hundred Thirty-Nine

Basics

Value: 47938 → 47939 → 47940

Parity: odd

Prime: Yes

Previous Prime: 47933

Next Prime: 47947

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 47939

Divisors: 1, 47939

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011101101000011

Octal: 135503

Duodecimal: 238AB

Hexadecimal: bb43

Square: 2298147721

Square Root: 218.949765928169

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) = (9 + 14·n + 12·n² + 4·n³)/3. A166911

Primes in which odd positioned digits are composite and even positioned digits are primes. The least significant digit is the taken to be the first digit. A83821

Primes of the form n + sum of proper non-divisors of n. A192560

Primes, starting with a(1)=2, whose successive differences are increasing triangular numbers. A278139

a(1)=3; for n>1, if n is odd a(n) = spf(∏_k=1..n-1(a(k))+1) else a(n) = spf(∏_k=1..n-1(a(k))-1), where spf is "smallest prime factor". A265009

Initial member of 6 consecutive primes a, b, c, d, e, f such that both (f + a)/(d - c) and (e + b)/(d - c) are prime. A293619

Number of 4-colorings of an n X n grid, up to rotational symmetry. A47939

Count of the prime decimal descendants of n. A346979