389742 has 16 divisors (see below), whose sum is σ = 825552. Its totient is φ = 122240.

The previous prime is 389723. The next prime is 389743. The reversal of 389742 is 247983.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389742.

It is not an unprimeable number, because it can be changed into a prime (389743) by changing a digit.

389742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1809 + ... + 2012.

It is an arithmetic number, because the mean of its divisors is an integer number (51597).

2³⁸⁹⁷⁴² is an apocalyptic number.

389742 is an abundant number, since it is smaller than the sum of its proper divisors (435810).

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

389742 is a wasteful number, since it uses less digits than its factorization.

389742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3843.

The product of its digits is 12096, while the sum is 33.

The square root of 389742 is about 624.2932003474. The cubic root of 389742 is about 73.0453212034.

The spelling of 389742 in words is "three hundred eighty-nine thousand, seven hundred forty-two".