Properties of the Number -1979

Nine Hundred Seventy-Nine

Basics

Value: -1980 → -1979 → -1978

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 1979

Divisors: 1, 1979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11110111011

Octal: -3673

Duodecimal: -118B

Hexadecimal: -7bb

Square: 3916441

Square Root: 44.48595283907045

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

Row sums of a number triangle related to the Pell numbers. A110331

Expansion of 1/(1+x²-2·x³). A77912

Expansion of 1/(1+x²+2·x³). A77963

Triangle T(n,k) = A015440(k) - A015440(n) + A015440(n-k), read by rows. A176263

Let f(x) = 1 -x³+ ∑_j>=2 (x^{2^j}-x^{1+2^j}). Then a(n) is n times the coefficient of xⁿ in the expansion of log(f(x)). A271726

Expansion of x/( 1+x-x²-x⁴-x⁵-x⁶-x⁷+x⁹+x¹⁰ ). A142155

G.f. A(x) where A000081(x) = x·A(A000081(x)). A185168

a(n) = n + (n+1)². A28387

a(n) = a(n-1) + a(n-2) + a(n-3) with a(0)=2, a(1)=1, a(2)=2. A214899

Primes of the form 36·k² - 810·k + 2753, listed in order of increasing parameter k >= 0. A50268