388789142 has 16 divisors (see below), whose sum is σ = 682752672. Its totient is φ = 162559680.

The previous prime is 388789139. The next prime is 388789147. The reversal of 388789142 is 241987883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388789147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338093 + ... + 339240.

It is an arithmetic number, because the mean of its divisors is an integer number (42672042).

Almost surely, 2^388789142 is an apocalyptic number.

388789142 is a deficient number, since it is larger than the sum of its proper divisors (293963530).

388789142 is a wasteful number, since it uses less digits than its factorization.

388789142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677383.

The product of its digits is 774144, while the sum is 50.

The square root of 388789142 is about 19717.7367362484. The cubic root of 388789142 is about 729.8574451104.

The spelling of 388789142 in words is "three hundred eighty-eight million, seven hundred eighty-nine thousand, one hundred forty-two".