Properties of the Number 9938

Nine Thousand Nine Hundred Thirty-Eight

Basics

Value: 9937 → 9938 → 9939

Parity: even

Prime: No

Previous Prime: 9931

Next Prime: 9941

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 4969

Divisors: 1, 2, 4969, 9938

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011011010010

Octal: 23322

Duodecimal: 5902

Hexadecimal: 26d2

Square: 98763844

Square Root: 99.68951800465283

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

Number of cyclic arrangements of S={1,2,...,n} such that the difference of any two neighbors is a divisor of their sum. A242531

a(n) = floor((n + 1/2)³). A219085

Number of four-prime Carmichael numbers less than 10ⁿ. A174612

a(n) = -a(n-1) + 3·a(n-2), starting a(1)=1, a(2)=2. A140165

a(n) = floor(M(g(n-1)+1, ..., g(n))), where M = harmonic mean and g(n) = n³. A227012

Numbers n such that the decimal expansions of both n and n² have 3 as the digit with the smallest value and 9 as the digit with the largest value. A238553

Number of factorizations of 2ⁿ into factors > 1 with even integer average. A326671

a(n) = A000043(n) - 3. A139480

Coefficient of·in the reduction by x²->x+1 of the polynomial p(n,x) defined below in Comments. A192761

Number of nX2 0..2 arrays with every 1 immediately preceded by 0 to the left or above, no 0 immediately preceded by a 0, and every 2 immediately preceded by 0 1 to the left or above. A203175