394657252132 has 24 divisors (see below), whose sum is σ = 811393232832. Its totient is φ = 165590455200.

The previous prime is 394657252123. The next prime is 394657252163. The reversal of 394657252132 is 231252756493.

It is a happy number.

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, 344979544 + ... + 344980687.

It is an arithmetic number, because the mean of its divisors is an integer number (33808051368).

Almost surely, 2^394657252132 is an apocalyptic number.

It is an amenable number.

394657252132 is an abundant number, since it is smaller than the sum of its proper divisors (416735980700).

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

394657252132 is a wasteful number, since it uses less digits than its factorization.

394657252132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689960259 (or 689960257 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 49.

The spelling of 394657252132 in words is "three hundred ninety-four billion, six hundred fifty-seven million, two hundred fifty-two thousand, one hundred thirty-two".