Properties of the Number 9841

Nine Thousand Eight Hundred Forty-One

Basics

Value: 9840 → 9841 → 9842

Parity: odd

Prime: No

Previous Prime: 9839

Next Prime: 9851

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 13 × 757

Divisors: 1, 13, 757, 9841

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001110001

Octal: 23161

Duodecimal: 5841

Hexadecimal: 2671

Square: 96845281

Square Root: 99.20181449953424

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) = (3ⁿ - 1)/2. A3462

Centered 12-gonal numbers, or centered dodecagonal numbers: numbers of the form 6·k*(k-1) + 1. A3154

a(n) = 2·a(n-1) + 3·a(n-2), a(0) = a(1) = 1. A46717

Hexanacci numbers with a(0) = ... = a(5) = 1. A383

Triangle of B-analogs of Stirling numbers of the second kind. A39755

Array read by antidiagonals: T(n,k) is the number of sublattices of index n in generic k-dimensional lattice (n >= 1, k >= 1). A160870

Triangular array: the fission of the polynomial sequence ((x+1)ⁿ: n >= 0) by the polynomial sequence ((x+2)ⁿ: n >= 0). (Fission is defined at Comments.) A193842

Triangle T(n, k, m) = (m*(n-k) + 1)*T(n-1, k-1, m) + (m·k + 1)*T(n-1, k, m) - m·k*(n-k)*T(n-2, k-1, m) with T(n, 0, m) = T(n, n, m) = 1 and m = 2, read by rows. A157153

Numbers m such that m and m+1 are consecutive lazy-Fibonacci-Niven numbers (A328212). A328213

Repunits in different bases: table by antidiagonals of numbers written in base k as a string of n 1's. A55129