Properties of the Number 39087

Thirty-Nine Thousand Eighty-Seven

Basics

Value: 39086 → 39087 → 39088

Parity: odd

Prime: No

Previous Prime: 39079

Next Prime: 39089

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 43 × 101

Divisors: 1, 3, 9, 43, 101, 129, 303, 387, 909, 4343

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001100010101111

Octal: 114257

Duodecimal: 1A753

Hexadecimal: 98af

Square: 1527793569

Square Root: 197.70432468714486

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

Number of integer compositions of n whose leaders of weakly increasing runs are distinct. A374632

a(n) = ∑_k=1..n (-1)^k+1 * floor(n/k)³. A344721

Sum of the lengths of the first descents in all hill-free Dyck paths of semilength n (a hill in a Dyck path is a peak at level 1). A118974

Number of ordered triples (w,x,y) with all terms in {1,...,n} and w²+x²+y²>=2n. A211645

Numbers of the form (5^j + 7^k)/2, for j and k >= 0. A226792

Positions of 1 in A328018. A328019

a(n) is the greatest m such that 2·H(n) > H(m), where H(n) is the n-th harmonic number. A289183

Number of (n+2)X(1+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically. A258519

Numbers whose base-9 representation has the same number of 1's and 5's. A39087