Properties of the Number 39974

Thirty-Nine Thousand Nine Hundred Seventy-Four

Basics

Value: 39973 → 39974 → 39975

Parity: even

Prime: No

Previous Prime: 39971

Next Prime: 39979

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 × 11 × 23 × 79

Divisors: 1, 2, 11, 22, 23, 46, 79, 158, 253, 506

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110000100110

Octal: 116046

Duodecimal: 1B172

Hexadecimal: 9c26

Square: 1597920676

Square Root: 199.93498943406578

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 (7·10^k + 71)/3 is prime. A270831

Sum of fourth powers: 0⁴ + 1⁴ + ... + n⁴. A538

Number of simple labeled graphs on n+2 nodes with exactly n connected components that are trees or cycles. A215862

The difference between the number of partitions of 2n into odd parts (A000009) and the number of partitions of 2n into even parts (A035363). A282893

Let a(1) = 1, a(2) = 2, a(3) = 7, a(4) = 15 and for n >= 5 set a(n) = (n·b(n) - b(n-2)) / 2, where b(n) = 4·b(n-2) - b(n-4) for n >= 5 and b(1) = 1, b(2) = 2, b(3) = 5, b(4) = 8. A93652

a(n) = ∑_{1 <= j <= n/2, gcd(j,n)=1} j⁴. A295576

Numbers k such that k², (k+1)² and (k+2)² are all abundant numbers. A383391

(1/30)*(p(p+1)(2p+1)(3p²+3p-1)) where p is prime. A98997

Number of ways to place 2 nonattacking nightriders on an n X n cylindrical board. A196810

An example of a d-perfect sequence. A39974