Properties of the Number -2189

One Hundred Eighty-Nine

Basics

Value: -2190 → -2189 → -2188

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 199

Divisors: 1, 11, 199, 2189

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100010001101

Octal: -4215

Duodecimal: -1325

Hexadecimal: -88d

Square: 4791721

Square Root: 46.78675026115834

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

∏_n>=1 1 / (1 - a(n)*xⁿ) = 1 + ∑_n>=1 x^prime(n). A348127

Numbers that are the sum of 3 positive 7th powers. A3370

Numbers that are the sum of 5 positive 6th powers. A3361

a(n) = floor(n*φ¹¹), where φ is the golden ratio, A001622. A4926

a(n) = n*(9·n + 1)/2. A22267

Number of points on surface of square pyramid: 3·n² + 2 (n>0). A5918

a(n)=A089551(n)/2. A89558

Numbers whose arithmetic derivative (A003415) is a primorial number (A002110) > 1. A327978

Sum of three consecutive squares: a(n) = n² + (n + 1)² + (n + 2)². A120328

a(n) = T(n,n), T given by A026568. Also a(n) = number of integer strings s(0),...,s(n) counted by T, such that s(n)=0. A26569