394806920648 has 32 divisors (see below), whose sum is σ = 847191571200. Its totient is φ = 168967617792.

The previous prime is 394806920633. The next prime is 394806920839. The reversal of 394806920648 is 846029608493.

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, 4862465 + ... + 4942992.

It is an arithmetic number, because the mean of its divisors is an integer number (26474736600).

Almost surely, 2^394806920648 is an apocalyptic number.

It is an amenable number.

394806920648 is an abundant number, since it is smaller than the sum of its proper divisors (452384650552).

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

394806920648 is a wasteful number, since it uses less digits than its factorization.

394806920648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9806189 (or 9806185 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 59.

The spelling of 394806920648 in words is "three hundred ninety-four billion, eight hundred six million, nine hundred twenty thousand, six hundred forty-eight".