Properties of the Number 39970

Thirty-Nine Thousand Nine Hundred Seventy

Basics

Value: 39969 → 39970 → 39971

Parity: even

Prime: No

Previous Prime: 39953

Next Prime: 39971

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 7 × 571

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 571, 1142

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000100010

Octal: 116042

Duodecimal: 1B16A

Hexadecimal: 9c22

Square: 1597600900

Square Root: 199.92498593222408

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 which when multiplied by any repunit prime Rp give a Smith number. A104167

G.f. A(x) satisfies A(x) = ( 1 + x·A(x)^5/3/(1 + x·A(x)) )³. A378951

Largest positive integer m with π(m·n) = m + n, where π(x) denotes the number of primes not exceeding x. A303910

G.f. A(x) satisfies A(x) = 1 + x*(A(x)³ - A(x)⁴ + A(x)⁵). A271469

An example of a d-perfect sequence: a(2·n) = 0, a(2·n+1) = Catalan(n) mod 3. A39970