30904087 has 2 divisors, whose sum is σ = 30904088. Its totient is φ = 30904086.

The previous prime is 30904073. The next prime is 30904151. The reversal of 30904087 is 78040903.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78040903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30904087 - 2⁷ = 30903959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30905087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15452043 + 15452044.

It is an arithmetic number, because the mean of its divisors is an integer number (15452044).

Almost surely, 2^30904087 is an apocalyptic number.

30904087 is a deficient number, since it is larger than the sum of its proper divisors (1).

30904087 is an equidigital number, since it uses as much as digits as its factorization.

30904087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 30904087 is about 5559.1444485640. The cubic root of 30904087 is about 313.8137528580.

The spelling of 30904087 in words is "thirty million, nine hundred four thousand, eighty-seven".