30967939 has 2 divisors, whose sum is σ = 30967940. Its totient is φ = 30967938.

The previous prime is 30967933. The next prime is 30967943. The reversal of 30967939 is 93976903.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30967939 - 2¹⁵ = 30935171 is a prime.

It is not a weakly prime, because it can be changed into another prime (30967933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15483969 + 15483970.

It is an arithmetic number, because the mean of its divisors is an integer number (15483970).

Almost surely, 2^30967939 is an apocalyptic number.

30967939 is a deficient number, since it is larger than the sum of its proper divisors (1).

30967939 is an equidigital number, since it uses as much as digits as its factorization.

30967939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562, while the sum is 46.

The square root of 30967939 is about 5564.8844552246. The cubic root of 30967939 is about 314.0297313187.

The spelling of 30967939 in words is "thirty million, nine hundred sixty-seven thousand, nine hundred thirty-nine".