Properties of the Number 9868

Nine Thousand Eight Hundred Sixty-Eight

Basics

Value: 9867 → 9868 → 9869

Parity: even

Prime: No

Previous Prime: 9859

Next Prime: 9871

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 2467

Divisors: 1, 2, 4, 2467, 4934, 9868

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011010001100

Octal: 23214

Duodecimal: 5864

Hexadecimal: 268c

Square: 97377424

Square Root: 99.33780750550115

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) = 1 + ∑_i=1..n (n-i+1)*φ(i). A5598

Number of non-cyclic hydrocarbons with n carbon atoms (excluding stereoisomers). A2986

Row sums of the triangular array A246696. A246697

Expansion of ∏_k=1..9 theta₃(q^k), where theta₃() is the Jacobi θ function. A320241

T(n,k) = 1/k! * ∑_i=0..k (-1)^k-i *C(k,i) * A258306(n,i); triangle T(n,k), n>=0, 0<=k<=floor(n/2), read by rows. A258307

Numbers that are nontrivially palindromic in three or more consecutive integer bases. A279093

Powers of e^1/e rounded up. A107586

Positive integers m with 2^m*p(m) + 1 prime, where p(.) is the partition function (A000041). A236390

Number of n X 1 0..3 arrays with no element equal to the sum modulo 4 of elements to its left or elements above it. A238768

Numbers m = ∑_k=1..n σ(k)/k such that ∑_k=1..n σ(k)/k is an integer for any k. A168132