Properties of the Number 8439

Eight Thousand Four Hundred Thirty-Nine

Basics

Value: 8438 → 8439 → 8440

Parity: odd

Prime: No

Previous Prime: 8431

Next Prime: 8443

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 29 × 97

Divisors: 1, 3, 29, 87, 97, 291, 2813, 8439

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000011110111

Octal: 20367

Duodecimal: 4A73

Hexadecimal: 20f7

Square: 71216721

Square Root: 91.86402995732334

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 1/(1 - x³ - x⁵ - x⁷ + x¹⁰), inverse of a Salem polynomial. A143472

a(1) = 8; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A46258

a(n) = 10·n²+n. A55437

Numbers k such that k and 8·k, taken together, are zeroless pandigital. A115932

Expansion of ∏_{1 <= i <= j <= k} (1 + x^i·j*k). A321359

Number T(n,k) of permutations of [n] where the minimal cyclic distance between elements of the same cycle equals k (k=n for the identity permutation in S_n); triangle T(n,k), n>=0, 0<=k<=n, read by rows. A277031

Monotonic ordering of set S generated by these rules: if·and y are in S then 5xy-x-y is in S, and 1 is in S. A192528

a(n) = number of subsets S of {1,2,...,n} having more than 2 elements such that (sum of least three elements of S) > max(S). A357289

Expansion of e.g.f. (1/x) * Series_Reversion( x / (exp(-x) + 3·x) ). A377374

Number of 6 X n 0..1 arrays with antidiagonals unimodal and rows and diagonals nondecreasing. A224042