394694535696 has 160 divisors (see below), whose sum is σ = 1039460791680. Its totient is φ = 129034616832.

The previous prime is 394694535679. The next prime is 394694535721. The reversal of 394694535696 is 696535496493.

It is a self number, because there is not a number n which added to its sum of digits gives 394694535696.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342319056 + ... + 342320208.

It is an arithmetic number, because the mean of its divisors is an integer number (6496629948).

Almost surely, 2^394694535696 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 394694535696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519730395840).

394694535696 is an abundant number, since it is smaller than the sum of its proper divisors (644766255984).

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

394694535696 is a wasteful number, since it uses less digits than its factorization.

394694535696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833 (or 1827 counting only the distinct ones).

The product of its digits is 566870400, while the sum is 69.

The spelling of 394694535696 in words is "three hundred ninety-four billion, six hundred ninety-four million, five hundred thirty-five thousand, six hundred ninety-six".