394879384670 has 16 divisors (see below), whose sum is σ = 710815726368. Its totient is φ = 157944457440.

The previous prime is 394879384667. The next prime is 394879384687. The reversal of 394879384670 is 76483978493.

It is a self number, because there is not a number n which added to its sum of digits gives 394879384670.

It is a congruent 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, 681989 + ... + 1120208.

It is an arithmetic number, because the mean of its divisors is an integer number (44425982898).

Almost surely, 2^394879384670 is an apocalyptic number.

394879384670 is a deficient number, since it is larger than the sum of its proper divisors (315936341698).

394879384670 is a wasteful number, since it uses less digits than its factorization.

394879384670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824115.

The product of its (nonzero) digits is 219469824, while the sum is 68.

The spelling of 394879384670 in words is "three hundred ninety-four billion, eight hundred seventy-nine million, three hundred eighty-four thousand, six hundred seventy".