Properties of the Number -9889

Eight Hundred Eighty-Nine

Basics

Value: -9890 → -9889 → -9888

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 34

Digital Root: 7

Palindrome: Yes

Factorization: 11 × 29 × 31

Divisors: 1, 11, 29, 31, 319, 341, 899, 9889

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011010100001

Octal: -23241

Duodecimal: -5881

Hexadecimal: -26a1

Square: 97792321

Square Root: 99.443451267542

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) = n*(n+2)*(n-2)/3. A77415

Generalized Mancala solitaire (A002491); to get n-th term, start with n and successively round up to next 10 multiples of n-1, n-2, ..., 1, for n>=1. A113747

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

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero. A304065

Numbers of the concatenated form 9nn9. A102484

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. A305457

Left diagonal of partition triangle A047812. A7044

n sets a new record for the number of integers k such that n = k + reverse(k). A67035