39904631144 has 32 divisors (see below), whose sum is σ = 86034544320. Its totient is φ = 16997060736.

The previous prime is 39904631093. The next prime is 39904631183. The reversal of 39904631144 is 44113640993.

It is a junction number, because it is equal to n+sod(n) for n = 39904631095 and 39904631104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176709 + ... + 2194964.

It is an arithmetic number, because the mean of its divisors is an integer number (2688579510).

Almost surely, 2^39904631144 is an apocalyptic number.

It is an amenable number.

39904631144 is an abundant number, since it is smaller than the sum of its proper divisors (46129913176).

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

39904631144 is a wasteful number, since it uses less digits than its factorization.

39904631144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371849 (or 4371845 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 39904631144 in words is "thirty-nine billion, nine hundred four million, six hundred thirty-one thousand, one hundred forty-four".