388965885 has 32 divisors (see below), whose sum is σ = 775913472. Its totient is φ = 161647680.

The previous prime is 388965877. The next prime is 388965919. The reversal of 388965885 is 588569883.

It is not a de Polignac number, because 388965885 - 2³ = 388965877 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 167229 + ... + 169538.

It is an arithmetic number, because the mean of its divisors is an integer number (24247296).

Almost surely, 2^388965885 is an apocalyptic number.

388965885 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

388965885 is a deficient number, since it is larger than the sum of its proper divisors (386947587).

388965885 is a wasteful number, since it uses less digits than its factorization.

388965885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336793.

The product of its digits is 16588800, while the sum is 60.

The square root of 388965885 is about 19722.2180547726. The cubic root of 388965885 is about 729.9680257466.

The spelling of 388965885 in words is "three hundred eighty-eight million, nine hundred sixty-five thousand, eight hundred eighty-five".