Properties of the Number 39830

Thirty-Nine Thousand Eight Hundred Thirty

Basics

Value: 39829 → 39830 → 39831

Parity: even

Prime: No

Previous Prime: 39829

Next Prime: 39839

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 7 × 569

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 569, 1138

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1001101110010110

Octal: 115626

Duodecimal: 1B072

Hexadecimal: 9b96

Square: 1586428900

Square Root: 199.5745474753732

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

Starts of runs of 3 consecutive Lucas-Niven numbers (A351714). A351716

Length of n-th run of primes in A376198. A376754

Number of compositions (ordered partitions) of n into distinct parts, the least being 4. A339165

Number of trees of diameter 5. A147

A Motzkin transform of Jacobsthal numbers. A112657

a(n) = n·A007504(n)/2 = n*(sum of first n primes)/2. A156778

Numbers k such that Bernoulli number B_k has denominator 4686. A295770

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (-1, 1, 1), (1, 0, 1), (1, 1, 0)}. A150694

a(1) = 1, a(2) = 2. Thereafter, let smc and smp denote the smallest missing composite and smallest missing prime. If a(n) is composite, then if a(n) = 2·smp then a(n+1) = smp, otherwise a(n+1) = smc; if a(n) is a prime, then if smp < smc, a(n+1) = smp, otherwise a(n+1) = smc. A376198

Number of different coefficient values in expansion of ∏_i=1..n (1-q¹+q²-...+(-q)ⁱ). A39830