394321574976 has 224 divisors, whose sum is σ = 1255781852160. Its totient is φ = 106676434944.

The previous prime is 394321574963. The next prime is 394321574987. The reversal of 394321574976 is 679475123493.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

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, 72442911 + ... + 72448353.

Almost surely, 2^394321574976 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 394321574976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627890926080).

394321574976 is an abundant number, since it is smaller than the sum of its proper divisors (861460277184).

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

394321574976 is a wasteful number, since it uses less digits than its factorization.

394321574976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321 (or 8311 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 60.

The spelling of 394321574976 in words is "three hundred ninety-four billion, three hundred twenty-one million, five hundred seventy-four thousand, nine hundred seventy-six".