393974416 has 20 divisors (see below), whose sum is σ = 832719024. Its totient is φ = 179079200.

The previous prime is 393974407. The next prime is 393974419. The reversal of 393974416 is 614479393.

It is not an unprimeable number, because it can be changed into a prime (393974419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119070 + ... + 1119421.

Almost surely, 2^393974416 is an apocalyptic number.

It is an amenable number.

393974416 is an abundant number, since it is smaller than the sum of its proper divisors (438744608).

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

393974416 is a wasteful number, since it uses less digits than its factorization.

393974416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238510 (or 2238504 counting only the distinct ones).

The product of its digits is 489888, while the sum is 46.

The square root of 393974416 is about 19848.7887791674. The cubic root of 393974416 is about 733.0878248875.

The spelling of 393974416 in words is "three hundred ninety-three million, nine hundred seventy-four thousand, four hundred sixteen".