394713866808 has 128 divisors (see below), whose sum is σ = 1115026848000. Its totient is φ = 129341784960.

The previous prime is 394713866791. The next prime is 394713866837. The reversal of 394713866808 is 808668317493.

394713866808 is a `hidden beast` number, since 3 + 9 + 471 + 3 + 86 + 6 + 80 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26700363 + ... + 26715141.

It is an arithmetic number, because the mean of its divisors is an integer number (8711147250).

Almost surely, 2^394713866808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394713866808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557513424000).

394713866808 is an abundant number, since it is smaller than the sum of its proper divisors (720312981192).

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

394713866808 is a wasteful number, since it uses less digits than its factorization.

394713866808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16882 (or 16872 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 394713866808 in words is "three hundred ninety-four billion, seven hundred thirteen million, eight hundred sixty-six thousand, eight hundred eight".