Properties of the Number -197209

One Hundred Ninety-Seven Thousand Two Hundred Nine

Basics

Value: -197210 → -197209 → -197208

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 199 × 991

Divisors: 1, 199, 991, 197209

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110000001001011001

Octal: -601131

Duodecimal: -96161

Hexadecimal: -30259

Square: 38891389681

Square Root: 444.08219959822753

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

Semiprimes whose prime factors are distinct and the reversal of one factor is equal to the other. A83815

Frobenius pseudoprimes with respect to Fibonacci polynomial x² - x - 1. A212424

Composite n such that n divides both Fibonacci(n-1) and Fibonacci(n) - 1. A94401

Composite k such that Fibonacci(k) == Legendre(k,5) == 1 (mod k). A93372

Odd composite integers m such that F(m)² == 1 (mod m) and L(m) == 1 (mod m), where F(m) and L(m) are the m-th Fibonacci and Lucas numbers, respectively. A337625

a(n) is the least k such that 3^k begins with n!. A374922

Nonprimes n such that Mod(n,4) == 1 and denominator(Fibonacci((n-1)/4)/n) = 1. A91982

Semiprimes k that divide Fibonacci(k-1). A177086

Strong pseudoprimes to base 24. A20250

Strong pseudoprimes to base 31. A20257