Properties of the Number 39841

Thirty-Nine Thousand Eight Hundred Forty-One

Basics

Value: 39840 → 39841 → 39842

Parity: odd

Prime: Yes

Previous Prime: 39839

Next Prime: 39847

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 39841

Divisors: 1, 39841

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101110100001

Octal: 115641

Duodecimal: 1B081

Hexadecimal: 9ba1

Square: 1587305281

Square Root: 199.60210419732553

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) is the number of 2n-celled fixed polyominoes with at least 180 degree rotational symmetry about a vertex of a square in the lattice. A390655

Prime numbers p such that p +- ((p-1)/5) are primes. A137714

Primes with 31 as smallest positive primitive root. A61735

Prime numbers p such that p +- ((p-1)/4) are primes. A137705

Primes of the form (k²+7)/11. A242930

Primes of the form f(n) = 9·n⁴ - 444·n³ + 8059·n² - 63714·n + 185371 listed by increasing value of n >= 0. A117225

Primes which are digital reversals of products of "emirpimes" pairs. A159238

a(1)=2, a(2)=2, a(n)=a(n-2)+floor(a(n-2)*a(n-1)/(a(n-2)+a(n-1))). A173091

Number of partitions satisfying cn(0,5) < cn(2,5) + cn(3,5). A39841