394757431208 has 64 divisors (see below), whose sum is σ = 850416000000. Its totient is φ = 168281597952.

The previous prime is 394757431147. The next prime is 394757431241. The reversal of 394757431208 is 802134757493.

It is a self number, because there is not a number n which added to its sum of digits gives 394757431208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15584858 + ... + 15610166.

It is an arithmetic number, because the mean of its divisors is an integer number (13287750000).

Almost surely, 2^394757431208 is an apocalyptic number.

It is an amenable number.

394757431208 is an abundant number, since it is smaller than the sum of its proper divisors (455658568792).

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

394757431208 is a wasteful number, since it uses less digits than its factorization.

394757431208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26794 (or 26790 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 394757431208 in words is "three hundred ninety-four billion, seven hundred fifty-seven million, four hundred thirty-one thousand, two hundred eight".