393881468 has 6 divisors (see below), whose sum is σ = 689292576. Its totient is φ = 196940732.

The previous prime is 393881459. The next prime is 393881471. The reversal of 393881468 is 864188393.

It is a super-2 number, since 2×393881468² = 310285221667670048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49235180 + ... + 49235187.

It is an arithmetic number, because the mean of its divisors is an integer number (114882096).

Almost surely, 2^393881468 is an apocalyptic number.

It is an amenable number.

393881468 is a deficient number, since it is larger than the sum of its proper divisors (295411108).

393881468 is a wasteful number, since it uses less digits than its factorization.

393881468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98470371 (or 98470369 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The square root of 393881468 is about 19846.4472387377. The cubic root of 393881468 is about 733.0301693617.

The spelling of 393881468 in words is "three hundred ninety-three million, eight hundred eighty-one thousand, four hundred sixty-eight".