Properties of the Number 9969

Nine Thousand Nine Hundred Sixty-Nine

Basics

Value: 9968 → 9969 → 9970

Parity: odd

Prime: No

Previous Prime: 9967

Next Prime: 9973

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 3323

Divisors: 1, 3, 3323, 9969

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011011110001

Octal: 23361

Duodecimal: 5929

Hexadecimal: 26f1

Square: 99380961

Square Root: 99.84487968844472

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

Numbers in which 9 outnumbers all other digits together. A292739

Semiprimes with semiprime digits (digits 4, 6, 9 only). A107342

Numbers k > 1 such that, in base 4, k and k² contain the same digits in the same proportion. A61658

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

Number of distinct regions among all circles that can be constructed on vertices of an n-sided regular polygon, using only a compass. A359046

Harmonic mean of digits is 8. A62185

Number of nX2 0..1 arrays with every element unequal to 0, 1, 3, 4 or 5 king-move adjacent elements, with upper left element zero. A304349

Starting numbers for which the RATS sequence has eventual period 14. A114615

G.f. A(x) satisfies: A(x - 4·x*A(x)) = x - x·A(x). A291818

The number of partitions of n in which at least one part is a multiple of 3. A295341