Properties of the Number 9869

Nine Thousand Eight Hundred Sixty-Nine

Basics

Value: 9868 → 9869 → 9870

Parity: odd

Prime: No

Previous Prime: 9859

Next Prime: 9871

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 71 × 139

Divisors: 1, 71, 139, 9869

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011010001101

Octal: 23215

Duodecimal: 5865

Hexadecimal: 268d

Square: 97397161

Square Root: 99.34284070832683

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

Sum of digits = 8 times number of digits. A61425

Numbers whose arithmetic derivative (A003415) is a primorial number (A002110) > 1. A327978

Number of distinct means of nonempty subsets of {1,...,n}. A135342

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

a(n) = (2·n+1) * (4·n-1). A33566

Fundamental discriminants d uniquely characterizing all complex biquadratic fields Q(sqrt(-3),sqrt(d)) which have 3-class group of type (3,3) and second 3-class group isomorphic to SmallGroup(729,37). A250240

Möbius transform of A341512, σ(n)*A003961(n) - n*σ(A003961(n)). A346239

Number of partitions of n such that m(greatest part) = m(1), where m = multiplicity. A240078

Start with two vertices and draw a circle around each whose radius is the distance between the vertices. The sequence gives the number of regions constructed after n iterations of drawing circles with this same radius around every new vertex created from all circles' intersections. A374337

Numbers which need ten 'Reverse and Add' steps to reach a palindrome. A65215