Properties of the Number 83905

Eighty-Three Thousand Nine Hundred Five

Basics

Value: 83904 → 83905 → 83906

Parity: odd

Prime: No

Previous Prime: 83903

Next Prime: 83911

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 × 97 × 173

Divisors: 1, 5, 97, 173, 485, 865, 16781, 83905

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10100011111000001

Octal: 243701

Duodecimal: 40681

Hexadecimal: 147c1

Square: 7040049025

Square Root: 289.66359798911566

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

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 18. A31606

G.f.: 1/(1-x) * sum(k>=0, (-1)^k*x²^k+1/(1+x²^k)). A83905