30839615939 has 18 divisors (see below), whose sum is σ = 35776151460. Its totient is φ = 26560397160.

The previous prime is 30839615929. The next prime is 30839615993. The reversal of 30839615939 is 93951693803.

It is not a de Polignac number, because 30839615939 - 2¹² = 30839611843 is a prime.

It is a super-2 number, since 2×30839615939² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30839615929) 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 17 ways as a sum of consecutive naturals, for example, 309329 + ... + 396690.

It is an arithmetic number, because the mean of its divisors is an integer number (1987563970).

Almost surely, 2^30839615939 is an apocalyptic number.

30839615939 is a deficient number, since it is larger than the sum of its proper divisors (4936535521).

30839615939 is a wasteful number, since it uses less digits than its factorization.

30839615939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706079 (or 706049 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 56.

The spelling of 30839615939 in words is "thirty billion, eight hundred thirty-nine million, six hundred fifteen thousand, nine hundred thirty-nine".