30908407439 has 32 divisors (see below), whose sum is σ = 39283453440. Its totient is φ = 23666815872.

The previous prime is 30908407429. The next prime is 30908407451. The reversal of 30908407439 is 93470480903.

It is a de Polignac number, because none of the positive numbers 2^k-30908407439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30908407393 and 30908407402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30908407429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390284 + ... + 462750.

It is an arithmetic number, because the mean of its divisors is an integer number (1227607920).

Almost surely, 2^30908407439 is an apocalyptic number.

30908407439 is a deficient number, since it is larger than the sum of its proper divisors (8375046001).

30908407439 is a wasteful number, since it uses less digits than its factorization.

30908407439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72639.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 30908407439 in words is "thirty billion, nine hundred eight million, four hundred seven thousand, four hundred thirty-nine".