Properties of the Number 9899

Nine Thousand Eight Hundred Ninety-Nine

Basics

Value: 9898 → 9899 → 9900

Parity: odd

Prime: No

Previous Prime: 9887

Next Prime: 9901

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 19 × 521

Divisors: 1, 19, 521, 9899

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011010101011

Octal: 23253

Duodecimal: 588B

Hexadecimal: 26ab

Square: 97990201

Square Root: 99.49371839468057

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) = floor(n*φ¹³), where φ is the golden ratio, A001622. A4928

Numbers in which 9 outnumbers all other digits together. A292739

Number of integer partitions y of n such that y_i = y_i+1 for all even i. A351003

Frobenius number of the numerical semigroup generated by 3 consecutive triangular numbers. A69755

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

Expansion of x²*(2 - x + x²) / ((1 + x)*(1 - x)⁴). A26035

T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. A280961

a(n) is the smallest k such that (k³ + 1)/(n³ + 1) is an integer > 1. A65964