199800199 has 2 divisors, whose sum is σ = 199800200. Its totient is φ = 199800198.

The previous prime is 199800191. The next prime is 199800203. The reversal of 199800199 is 991008991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199800199 - 2³ = 199800191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199800191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99900099 + 99900100.

It is an arithmetic number, because the mean of its divisors is an integer number (99900100).

Almost surely, 2^199800199 is an apocalyptic number.

199800199 is a deficient number, since it is larger than the sum of its proper divisors (1).

199800199 is an equidigital number, since it uses as much as digits as its factorization.

199800199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 46.

The square root of 199800199 is about 14135.0698264989. The cubic root of 199800199 is about 584.6087422016.

The spelling of 199800199 in words is "one hundred ninety-nine million, eight hundred thousand, one hundred ninety-nine".