30305039 has 2 divisors, whose sum is σ = 30305040. Its totient is φ = 30305038.

The previous prime is 30305017. The next prime is 30305059. The reversal of 30305039 is 93050303.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30305039 - 2⁸ = 30304783 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30305059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15152519 + 15152520.

It is an arithmetic number, because the mean of its divisors is an integer number (15152520).

Almost surely, 2^30305039 is an apocalyptic number.

30305039 is a deficient number, since it is larger than the sum of its proper divisors (1).

30305039 is an equidigital number, since it uses as much as digits as its factorization.

30305039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 23.

The square root of 30305039 is about 5505.0012715712. The cubic root of 30305039 is about 311.7728424063.

The spelling of 30305039 in words is "thirty million, three hundred five thousand, thirty-nine".