Properties of the Number 9381

Nine Thousand Three Hundred Eighty-One

Basics

Value: 9380 → 9381 → 9382

Parity: odd

Prime: No

Previous Prime: 9377

Next Prime: 9391

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 53 × 59

Divisors: 1, 3, 53, 59, 159, 177, 3127, 9381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010010100101

Octal: 22245

Duodecimal: 5519

Hexadecimal: 24a5

Square: 88003161

Square Root: 96.85556256612213

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

Crystal ball sequence for A₄ lattice. A8384

The 360 degree spoke (or ray) of a hexagonal spiral of Ulam. A244803

Boustrophedon transform of 1 followed by Thue-Morse sequence A001285. A29885

Coefficient array for certain polynomials N(5; k,x) (rising powers in x). A62986

Perrin sequence of order 5. A87935

Partial sums of A080670. A287881

Number of noncrossing partitions of the n-set with some pair of singletons {i} and {j} that can be merged into {i,j} and leave the partition a noncrossing-partition. A363449

Starting from a(1)=1, a(n) is the minimum integer greater than a(n-1) such that a(n)+a(n-1), a(n)*a(n-1)+1 and a(n)*a(n-1)-1 are all primes. A228590

Sum of all proper divisors of all positive integers <= prime(n). A244576

Expansion of ∏_k>=1 (1 + x^4·k)^4·k / (1 + x^k)^k. A285295