Properties of the Number 9866

Nine Thousand Eight Hundred Sixty-Six

Basics

Value: 9865 → 9866 → 9867

Parity: even

Prime: No

Previous Prime: 9859

Next Prime: 9871

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 4933

Divisors: 1, 2, 4933, 9866

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011010001010

Octal: 23212

Duodecimal: 5862

Hexadecimal: 268a

Square: 97337956

Square Root: 99.32774033471213

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

Expansion of (1 - 3·x) / (1 - 5·x + 3·x²). A52961

Number of words of length n in a certain language. A5819

Number A(n,k) of tilings of a k X n rectangle using polyominoes of shape I; square array A(n,k), n>=0, k>=0, read by antidiagonals. A254414

a(n)² is the start of the first occurrence of n consecutive perfect powers, all of which are squares with exponents equal to 2 (A111245). A340663

Self-reciprocating sequence: the integer part of powers of the reciprocal sum. A66173

Row sums of the triangle in A208101. A208976

a(n) = floor( n*(n-1)*(n-2)/23 ). A11905

Sum of proper divisors of the number of partitions of n. A139055

Number of tilings of a 7 X n rectangle using polyominoes of shape I. A254607

a(n) is the position of the first occurrence of n³ in the concatenation of the positive integers in decimal representation. A290787