388842 has 16 divisors (see below), whose sum is σ = 783840. Its totient is φ = 128592.

The previous prime is 388837. The next prime is 388859. The reversal of 388842 is 248883.

388842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

388842 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (48990).

2³⁸⁸⁸⁴² is an apocalyptic number.

388842 is an abundant number, since it is smaller than the sum of its proper divisors (394998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388842 is a wasteful number, since it uses less digits than its factorization.

388842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517.

The product of its digits is 12288, while the sum is 33.

The square root of 388842 is about 623.5719685810. The cubic root of 388842 is about 72.9890519642.

The spelling of 388842 in words is "three hundred eighty-eight thousand, eight hundred forty-two".