394997364804 has 96 divisors (see below), whose sum is σ = 1098159068160. Its totient is φ = 108151924608.

The previous prime is 394997364767. The next prime is 394997364809. The reversal of 394997364804 is 408463799493.

It is not an unprimeable number, because it can be changed into a prime (394997364809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 840234 + ... + 1223105.

It is an arithmetic number, because the mean of its divisors is an integer number (11439156960).

Almost surely, 2^394997364804 is an apocalyptic number.

It is an amenable number.

394997364804 is an abundant number, since it is smaller than the sum of its proper divisors (703161703356).

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

394997364804 is a wasteful number, since it uses less digits than its factorization.

394997364804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063449 (or 2063447 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 66.

The spelling of 394997364804 in words is "three hundred ninety-four billion, nine hundred ninety-seven million, three hundred sixty-four thousand, eight hundred four".