389720 has 16 divisors (see below), whose sum is σ = 876960. Its totient is φ = 155872.

The previous prime is 389713. The next prime is 389723. The reversal of 389720 is 27983.

389720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 389720.

It is not an unprimeable number, because it can be changed into a prime (389723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4832 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (54810).

2³⁸⁹⁷²⁰ is an apocalyptic number.

It is an amenable number.

389720 is an abundant number, since it is smaller than the sum of its proper divisors (487240).

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

389720 is a wasteful number, since it uses less digits than its factorization.

389720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9754 (or 9750 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 389720 is about 624.2755801727. The cubic root of 389720 is about 73.0439467665.

The spelling of 389720 in words is "three hundred eighty-nine thousand, seven hundred twenty".