30904199 has 2 divisors, whose sum is σ = 30904200. Its totient is φ = 30904198.

The previous prime is 30904193. The next prime is 30904253. The reversal of 30904199 is 99140903.

It is a weak prime.

It is an emirp because it is prime and its reverse (99140903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30904199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30904193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15452099 + 15452100.

It is an arithmetic number, because the mean of its divisors is an integer number (15452100).

Almost surely, 2^30904199 is an apocalyptic number.

30904199 is a deficient number, since it is larger than the sum of its proper divisors (1).

30904199 is an equidigital number, since it uses as much as digits as its factorization.

30904199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 30904199 is about 5559.1545220474. The cubic root of 30904199 is about 313.8141319567.

The spelling of 30904199 in words is "thirty million, nine hundred four thousand, one hundred ninety-nine".