30502939 has 2 divisors, whose sum is σ = 30502940. Its totient is φ = 30502938.

The previous prime is 30502933. The next prime is 30502943. The reversal of 30502939 is 93920503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30502939 - 2⁵ = 30502907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30502939.

It is not a weakly prime, because it can be changed into another prime (30502933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251469 + 15251470.

It is an arithmetic number, because the mean of its divisors is an integer number (15251470).

Almost surely, 2^30502939 is an apocalyptic number.

30502939 is a deficient number, since it is larger than the sum of its proper divisors (1).

30502939 is an equidigital number, since it uses as much as digits as its factorization.

30502939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 30502939 is about 5522.9465867415. The cubic root of 30502939 is about 312.4500237947.

The spelling of 30502939 in words is "thirty million, five hundred two thousand, nine hundred thirty-nine".