39904986612 has 12 divisors (see below), whose sum is σ = 93111635456. Its totient is φ = 13301662200.

The previous prime is 39904986547. The next prime is 39904986617. The reversal of 39904986612 is 21668940993.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39904986617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662707764 + ... + 1662707787.

Almost surely, 2^39904986612 is an apocalyptic number.

It is an amenable number.

39904986612 is an abundant number, since it is smaller than the sum of its proper divisors (53206648844).

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

39904986612 is a wasteful number, since it uses less digits than its factorization.

39904986612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325415558 (or 3325415556 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 39904986612 in words is "thirty-nine billion, nine hundred four million, nine hundred eighty-six thousand, six hundred twelve".