199057207 has 2 divisors, whose sum is σ = 199057208. Its totient is φ = 199057206.

The previous prime is 199057193. The next prime is 199057237. The reversal of 199057207 is 702750991.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199057207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199057207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199057237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99528603 + 99528604.

It is an arithmetic number, because the mean of its divisors is an integer number (99528604).

Almost surely, 2^199057207 is an apocalyptic number.

199057207 is a deficient number, since it is larger than the sum of its proper divisors (1).

199057207 is an equidigital number, since it uses as much as digits as its factorization.

199057207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 199057207 is about 14108.7634823184. The cubic root of 199057207 is about 583.8831854538.

The spelling of 199057207 in words is "one hundred ninety-nine million, fifty-seven thousand, two hundred seven".