Properties of the Number 19397

Nineteen Thousand Three Hundred Ninety-Seven

Basics

Value: 19396 → 19397 → 19398

Parity: odd

Prime: No

Previous Prime: 19391

Next Prime: 19403

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 7 × 17 × 163

Divisors: 1, 7, 17, 119, 163, 1141, 2771, 19397

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100101111000101

Octal: 45705

Duodecimal: B285

Hexadecimal: 4bc5

Square: 376243609

Square Root: 139.27311298308803

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 n-dimensional partitions of 6. A42984

Expansion of ∏_k>=1 1/(1-x^k²)^k². A291655

Relative of Hofstadter Q-sequence: a(n) = max(0, n+19395) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0. A283886

Odd numbers producing 4 odd numbers in the Collatz iteration. A198587

Fibonacci sequence beginning 14, 11. A206605

Antidiagonal sums of table A083362. A83364

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (composite numbers), t = (odd natural numbers). A24590

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (odd natural numbers), t = A000201 (lower Wythoff sequence). A24599

Number of active (ON, black) cells at stage 2ⁿ-1 of the two-dimensional cellular automaton defined by "Rule 382", based on the 5-celled von Neumann neighborhood. A271540

Primes with primitive root 74. A19397