388986236 has 12 divisors (see below), whose sum is σ = 682583328. Its totient is φ = 193962432.

The previous prime is 388986179. The next prime is 388986263. The reversal of 388986236 is 632689883.

It is a happy number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131021 + ... + 133956.

It is an arithmetic number, because the mean of its divisors is an integer number (56881944).

Almost surely, 2^388986236 is an apocalyptic number.

It is an amenable number.

388986236 is a deficient number, since it is larger than the sum of its proper divisors (293597092).

388986236 is a wasteful number, since it uses less digits than its factorization.

388986236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265348 (or 265346 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The square root of 388986236 is about 19722.7339889783. The cubic root of 388986236 is about 729.9807563577.

The spelling of 388986236 in words is "three hundred eighty-eight million, nine hundred eighty-six thousand, two hundred thirty-six".