387983644 has 12 divisors (see below), whose sum is σ = 679161168. Its totient is φ = 193937600.

The previous prime is 387983627. The next prime is 387983677. The reversal of 387983644 is 446389783.

It is a junction number, because it is equal to n+sod(n) for n = 387983591 and 387983600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5529 + ... + 28399.

It is an arithmetic number, because the mean of its divisors is an integer number (56596764).

Almost surely, 2^387983644 is an apocalyptic number.

It is an amenable number.

387983644 is a deficient number, since it is larger than the sum of its proper divisors (291177524).

387983644 is a wasteful number, since it uses less digits than its factorization.

387983644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27116 (or 27114 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The square root of 387983644 is about 19697.3004241698. The cubic root of 387983644 is about 729.3530541506.

The spelling of 387983644 in words is "three hundred eighty-seven million, nine hundred eighty-three thousand, six hundred forty-four".