Properties of the Number 8398

Eight Thousand Three Hundred Ninety-Eight

Basics

Value: 8397 → 8398 → 8399

Parity: even

Prime: No

Previous Prime: 8389

Next Prime: 8419

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 13 × 17 × 19

Divisors: 1, 2, 13, 17, 19, 26, 34, 38, 221, 247

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000011001110

Octal: 20316

Duodecimal: 4A3A

Hexadecimal: 20ce

Square: 70526404

Square Root: 91.64060235506966

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

a(n) = ((2n+1) + (2n-1) - 1)!/((2n+1)!*(2n-1)!). A65097

Super ballot numbers: 6(2n)!/(n!(n+2)!). A7054

Triangle T(n,m) = ∑_k=0..m Catalan(n-k)*Catalan(k). A28364

a(n) = n*(n+4)*(n+5)/6. A5586

Number of ordered rooted trees with n nodes, at least half of which are leaves. A358586

a(n) = C_n / 2 if n is even or ( C_n + C_(n-1/2) ) / 2 if n is odd, where C = Catalan numbers (A000108). A7595

Half-convolution of Catalan sequence A000108 with itself. A201204

Array of cycle count sequences for the table A073200. A73201

Catalan triangle A028364 with row reversion. A67323

Number of ordered rooted trees with n nodes, most of which are leaves. A358585