199899307 has 2 divisors, whose sum is σ = 199899308. Its totient is φ = 199899306.

The previous prime is 199899299. The next prime is 199899341. The reversal of 199899307 is 703998991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199899307 - 2³ = 199899299 is a prime.

It is not a weakly prime, because it can be changed into another prime (199899347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99949653 + 99949654.

It is an arithmetic number, because the mean of its divisors is an integer number (99949654).

Almost surely, 2^199899307 is an apocalyptic number.

199899307 is a deficient number, since it is larger than the sum of its proper divisors (1).

199899307 is an equidigital number, since it uses as much as digits as its factorization.

199899307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 199899307 is about 14138.5751403739. The cubic root of 199899307 is about 584.7053884615.

The spelling of 199899307 in words is "one hundred ninety-nine million, eight hundred ninety-nine thousand, three hundred seven".