394657385822 has 8 divisors (see below), whose sum is σ = 676555518576. Its totient is φ = 169138879632.

The previous prime is 394657385819. The next prime is 394657385833. The reversal of 394657385822 is 228583756493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14094906623 + ... + 14094906650.

It is an arithmetic number, because the mean of its divisors is an integer number (84569439822).

Almost surely, 2^394657385822 is an apocalyptic number.

394657385822 is a deficient number, since it is larger than the sum of its proper divisors (281898132754).

394657385822 is a wasteful number, since it uses less digits than its factorization.

394657385822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28189813282.

The product of its digits is 87091200, while the sum is 62.

The spelling of 394657385822 in words is "three hundred ninety-four billion, six hundred fifty-seven million, three hundred eighty-five thousand, eight hundred twenty-two".