Properties of the Number 9855

Nine Thousand Eight Hundred Fifty-Five

Basics

Value: 9854 → 9855 → 9856

Parity: odd

Prime: No

Previous Prime: 9851

Next Prime: 9857

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 73

Divisors: 1, 3, 5, 9, 15, 27, 45, 73, 135, 219

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001111111

Octal: 23177

Duodecimal: 5853

Hexadecimal: 267f

Square: 97121025

Square Root: 99.27235264664579

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*(n² + 1)/2. A6003

Rhombic dodecahedral numbers: a(n) = n⁴ - (n - 1)⁴. A5917

RMS numbers: numbers n such that root mean square of divisors of n is an integer. A140480

Generalized 30-gonal (or triacontagonal) numbers: m*(14·m - 13) with m = 0, +1, -1, +2, -2, +3, -3, ... A316729

a(n) = (1/2)*(n³ + n*(n mod 2)). A317614

Number of integer partitions of n whose run-lengths are either weakly increasing or weakly decreasing. A332745

30-gonal numbers: a(n) = n*(14·n-13). A254474

A sequence of asymptotic density ζ(8) - 1, where ζ is the Riemann ζ function. A143034

-9-Knödel numbers. A225513

Number of times the digit 2 appears in the first 10ⁿ decimal digits of Euler's number e = exp(1), counting starts after the decimal point. A322717