30990009904 has 40 divisors (see below), whose sum is σ = 69915480480. Its totient is φ = 13030837248.

The previous prime is 30990009893. The next prime is 30990009943. The reversal of 30990009904 is 40990009903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2604409 + ... + 2616280.

It is an arithmetic number, because the mean of its divisors is an integer number (1747887012).

Almost surely, 2^30990009904 is an apocalyptic number.

It is an amenable number.

30990009904 is an abundant number, since it is smaller than the sum of its proper divisors (38925470576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30990009904 is a wasteful number, since it uses less digits than its factorization.

30990009904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220757 (or 5220751 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 43.

Subtracting 30990009904 from its reverse (40990009903), we obtain a palindrome (9999999999).

The spelling of 30990009904 in words is "thirty billion, nine hundred ninety million, nine thousand, nine hundred four".