30394139 has 2 divisors, whose sum is σ = 30394140. Its totient is φ = 30394138.

The previous prime is 30394127. The next prime is 30394153. The reversal of 30394139 is 93149303.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30394139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30394439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15197069 + 15197070.

It is an arithmetic number, because the mean of its divisors is an integer number (15197070).

Almost surely, 2^30394139 is an apocalyptic number.

30394139 is a deficient number, since it is larger than the sum of its proper divisors (1).

30394139 is an equidigital number, since it uses as much as digits as its factorization.

30394139 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 32.

The square root of 30394139 is about 5513.0879731780. The cubic root of 30394139 is about 312.0780917553.

The spelling of 30394139 in words is "thirty million, three hundred ninety-four thousand, one hundred thirty-nine".