394391222976 has 112 divisors (see below), whose sum is σ = 1080251128800. Its totient is φ = 126839365632.

The previous prime is 394391222957. The next prime is 394391223049. The reversal of 394391222976 is 679222193493.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7954230 + ... + 8003658.

Almost surely, 2^394391222976 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 394391222976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540125564400).

394391222976 is an abundant number, since it is smaller than the sum of its proper divisors (685859905824).

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

394391222976 is a wasteful number, since it uses less digits than its factorization.

394391222976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50906 (or 50896 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 57.

The spelling of 394391222976 in words is "three hundred ninety-four billion, three hundred ninety-one million, two hundred twenty-two thousand, nine hundred seventy-six".