Properties of the Number 9988

Nine Thousand Nine Hundred Eighty-Eight

Basics

Value: 9987 → 9988 → 9989

Parity: even

Prime: No

Previous Prime: 9973

Next Prime: 10007

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 11 × 227

Divisors: 1, 2, 4, 11, 22, 44, 227, 454, 908, 2497

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100000100

Octal: 23404

Duodecimal: 5944

Hexadecimal: 2704

Square: 99760144

Square Root: 99.93998198919189

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 prime knots with n crossings. A2863

Numbers n such that Bernoulli number B_n has denominator 690. A272186

G.f. satisfies: A(x) = 1 + x/A(-x·A(x)³). A213092

Irregular triangle read by rows: T(n,k) (0 <= k <= n²) are coefficients of exact spanning probability for site percolation along the second dimension for an n X n 2D nnsquare lattice with periodic boundary conditions. A366467

Numbers with rounded up arithmetic mean of digits = 9. A178369

Numbers which have only digits 8 and 9 in base 10. A256341

Numbers whose smallest decimal digit is 8. A284069

Numbers m such that [A070080(m), A070081(m), A070082(m)] is an acute scalene integer triangle with prime side lengths. A70123

Sum of the prime parts in the partitions of n into 5 parts. A309466

Coefficients in the expansion of C³/B⁴, in Watson's notation of page 118. A160527