387998164 has 24 divisors (see below), whose sum is σ = 718502400. Its totient is φ = 182819520.

The previous prime is 387998141. The next prime is 387998203. The reversal of 387998164 is 461899783.

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, 1152 + ... + 27880.

It is an arithmetic number, because the mean of its divisors is an integer number (29937600).

Almost surely, 2^387998164 is an apocalyptic number.

It is an amenable number.

387998164 is a deficient number, since it is larger than the sum of its proper divisors (330504236).

387998164 is a wasteful number, since it uses less digits than its factorization.

387998164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26943 (or 26941 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 387998164 is about 19697.6689991481. The cubic root of 387998164 is about 729.3621525360.

The spelling of 387998164 in words is "three hundred eighty-seven million, nine hundred ninety-eight thousand, one hundred sixty-four".