Properties of the Number -2219

Two Hundred Nineteen

Basics

Value: -2220 → -2219 → -2218

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 7 × 317

Divisors: 1, 7, 317, 2219

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100010101011

Octal: -4253

Duodecimal: -134B

Hexadecimal: -8ab

Square: 4923961

Square Root: 47.10626285325551

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

G.f. satisfies A(x) = (1 + x) * (1 + x/A(x)). A366325

Triangle read by rows: characteristic polynomials of certain matrices, see Mathematica program. A124040

Values z of primitive solutions (x, y, z) to the Diophantine equation x³ + y³ + 2·z³ = 128. A336230

Number of restricted hexagonal polyominoes with n cells. A2212

Triangle read by rows: T(n,k) = number of lattice paths from (0,0) to (n,k) that do not go below the line y=0 and consist of steps U=(1,1), D=(1,-1) and three types of steps H=(1,0) (left factors of 3-Motzkin steps). A91965

Odd positive integers a(n) such that for every odd integer m > 1 there exists a unique representation of m as a sum of the form a(l) + 2a(s). A145812

Poincaré series for invariant polynomial functions on the space of binary forms of degree 10. A293935

Numbers k such that lcm(1,2,3,...,k)/7 equals the denominator of the k-th harmonic number H(k). A112815

Number of distinct products i·j*k over all triples (i,j,k) with |i| + |j| + |k| <= n. A213207

Number of partitions of n into distinct parts for which (number of odd parts) >= (number of even parts). A239243