30934639 has 2 divisors, whose sum is σ = 30934640. Its totient is φ = 30934638.

The previous prime is 30934591. The next prime is 30934643. The reversal of 30934639 is 93643903.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30934639 - 2⁷ = 30934511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30934598 and 30934607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30934439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15467319 + 15467320.

It is an arithmetic number, because the mean of its divisors is an integer number (15467320).

Almost surely, 2^30934639 is an apocalyptic number.

30934639 is a deficient number, since it is larger than the sum of its proper divisors (1).

30934639 is an equidigital number, since it uses as much as digits as its factorization.

30934639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 30934639 is about 5561.8916746014. The cubic root of 30934639 is about 313.9171316338.

The spelling of 30934639 in words is "thirty million, nine hundred thirty-four thousand, six hundred thirty-nine".