Properties of the Number 30439

Thirty Thousand Four Hundred Thirty-Nine

Basics

Value: 30438 → 30439 → 30440

Parity: odd

Prime: No

Previous Prime: 30431

Next Prime: 30449

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 61 × 499

Divisors: 1, 61, 499, 30439

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011011100111

Octal: 73347

Duodecimal: 15747

Hexadecimal: 76e7

Square: 926532721

Square Root: 174.46776206508756

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

Expansion of (g/(1 - x·g))², where g = 1+x·g⁴ is the g.f. of A002293. A391275

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 23 ones. A31791

Bell triangle A011971 squared. A95799

Least j > 1 such that j² = (4·n² + 2)*(k²) + (4·n² + 2)*k + 1. A106231

a(n) = t(n)_t(n) where t() = triangular numbers A000217. A122628

Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 n X 3 array. A219768

a(1) = 1; a(n) = -∑_k=1..n a(k/gcd(n,k)). A343762

a(n+1) = smallest number not containing any digits of a(n), working in base 3. A30439