39999999999904 has 48 divisors (see below), whose sum is σ = 90376569158400. Its totient is φ = 17071129684224.

The previous prime is 39999999999899. The next prime is 39999999999913. The reversal of 39999999999904 is 40999999999993.

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, 373526859 + ... + 373633930.

It is an arithmetic number, because the mean of its divisors is an integer number (1882845190800).

Almost surely, 2^{39999999999904} is an apocalyptic number.

It is an amenable number.

39999999999904 is an abundant number, since it is smaller than the sum of its proper divisors (50376569158496).

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

39999999999904 is a wasteful number, since it uses less digits than its factorization.

39999999999904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747161045 (or 747161037 counting only the distinct ones).

The product of its (nonzero) digits is 376572715308, while the sum is 106.

The spelling of 39999999999904 in words is "thirty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred four".