Properties of the Number -779

Seven Hundred Seventy-Nine

Basics

Value: -780 → -779 → -778

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 19 × 41

Divisors: 1, 19, 41, 779

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100001011

Octal: -1413

Duodecimal: -54B

Hexadecimal: -30b

Square: 606841

Square Root: 27.910571473905726

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

a(n) = (n+1)*(2-n)/2. A80956

a(n) = -n³ + 7·n² - 5·n + 1. A161708

a(n) = 1·2 - 3·4 + 5·6 - 7·8 + 9·10 - 11·12 + 13·14 - ... + (up to n). A319373

Triangle T(n,k) = 1 - A176304(k) - A176304(n-k) + A176304(n), read by rows. A176306

Coefficients of the C-Rogers-Selberg identity. A104410

a(n+4) = a(n+1) - a(n), a(0) = 1, a(1) = -4, a(2) = 0, a(3) = 1. A110064

Row sums of number triangle related to the Jacobsthal numbers. A110325

Expansion of x/(1-6·x+25·x²). A188599

a(n) = 2*σ(n²) - σ(n)². A195735

a(n) = a(n-1)² + a(n-1)*a(n-2)² - a(n-2)⁴ with a(1) = 2, a(2) = 3. A242995