393897709304 has 32 divisors (see below), whose sum is σ = 805860282240. Its totient is φ = 179008764000.

The previous prime is 393897709297. The next prime is 393897709339. The reversal of 393897709304 is 403907798393.

It is a congruent number.

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, 1397 + ... + 887579.

It is an arithmetic number, because the mean of its divisors is an integer number (25183133820).

Almost surely, 2^393897709304 is an apocalyptic number.

It is an amenable number.

393897709304 is an abundant number, since it is smaller than the sum of its proper divisors (411962572936).

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

393897709304 is a wasteful number, since it uses less digits than its factorization.

393897709304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891251 (or 891247 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 62.

The spelling of 393897709304 in words is "three hundred ninety-three billion, eight hundred ninety-seven million, seven hundred nine thousand, three hundred four".