199570099 has 2 divisors, whose sum is σ = 199570100. Its totient is φ = 199570098.

The previous prime is 199570073. The next prime is 199570109. The reversal of 199570099 is 990075991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199570099 - 2¹¹ = 199568051 is a prime.

It is not a weakly prime, because it can be changed into another prime (199570039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99785049 + 99785050.

It is an arithmetic number, because the mean of its divisors is an integer number (99785050).

Almost surely, 2^199570099 is an apocalyptic number.

199570099 is a deficient number, since it is larger than the sum of its proper divisors (1).

199570099 is an equidigital number, since it uses as much as digits as its factorization.

199570099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 229635, while the sum is 49.

The square root of 199570099 is about 14126.9281515834. The cubic root of 199570099 is about 584.3842343437.

The spelling of 199570099 in words is "one hundred ninety-nine million, five hundred seventy thousand, ninety-nine".