Properties of the Number 49239

Forty-Nine Thousand Two Hundred Thirty-Nine

Basics

Value: 49238 → 49239 → 49240

Parity: odd

Prime: No

Previous Prime: 49223

Next Prime: 49253

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5471

Divisors: 1, 3, 9, 5471, 16413, 49239

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100000001010111

Octal: 140127

Duodecimal: 245B3

Hexadecimal: c057

Square: 2424479121

Square Root: 221.89862550272815

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

Triangle formed by coefficients of the expansion of p(x, n), where p(x,n) = (1 + 2·x - x²)^{n + 1}*∑_{j >= 0} (j+1)ⁿ*(-2·x + x²)^j. A156901

E.g.f. A(x) satisfies: Series_Reversion( LambertW(A(x)) ) = -LambertW(-A(x)). A276908

Triangle of coefficients T(n,k) of xⁿ*y^k in g.f. A(x,y) where A(x,y) = A(x³ + 3·x*y·A(x,y)³, y) / A(x² + 2·x*y·A(x,y)², y), read by rows. A385910

Starting at n, a(n) is the number of times we move away from zero from a positive position according to the following rules. On the k-th step (k=1,2,3,...) move a distance of k in the direction of zero. If the number landed on has been landed on before, move a distance of k away. A324687

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A317568

Smallest nonnegative value taken on by px²-qy² for an infinite number of integer pairs (x,y), where (p,q) = (1,1), (1,2), (2,1), (1,3), (2,2), (3,1)... A49239