387993404 has 12 divisors (see below), whose sum is σ = 685989024. Its totient is φ = 191996544.

The previous prime is 387993391. The next prime is 387993461. The reversal of 387993404 is 404399783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499604 + ... + 500379.

It is an arithmetic number, because the mean of its divisors is an integer number (57165752).

Almost surely, 2^387993404 is an apocalyptic number.

It is an amenable number.

387993404 is a deficient number, since it is larger than the sum of its proper divisors (297995620).

387993404 is a wasteful number, since it uses less digits than its factorization.

387993404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000084 (or 1000082 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 387993404 is about 19697.5481722980. The cubic root of 387993404 is about 729.3591698947.

The spelling of 387993404 in words is "three hundred eighty-seven million, nine hundred ninety-three thousand, four hundred four".