Properties of the Number -919

Nine Hundred Nineteen

Basics

Value: -920 → -919 → -918

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: Yes

Factorization: 919

Divisors: 1, 919

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110010111

Octal: -1627

Duodecimal: -647

Hexadecimal: -397

Square: 844561

Square Root: 30.315012782448235

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

Carlitz-Riordan q-Catalan numbers (recurrence version) for q=-10. A15107

a(n) = -n² + 9·n + 53. A126665

Determinant of the n X n matrix with (i,j)-entry equal to A008683(i+j-1) for all i,j = 1..n. A228548

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of ∏_j>=1 (1-j·x^j)^{j^(k·j}) in powers of x. A294605

Expansion of ∏_k>=1 (1 - k·x^k)^{k^k}. A294606

Negative values of the inverse binomial transform of A045883. A140962

Row sums of triangle A161363. A161375

Triangle read by rows: numerators of coefficients of the Hirzebruch L-polynomials L_n expressing the signature of a 4n-dimensional manifold in terms of its Pontrjagin numbers (as in Hirzebruch Signature Theorem). A237111

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 305", based on the 5-celled von Neumann neighborhood. A271163

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 475", based on the 5-celled von Neumann neighborhood. A272450