389872 has 30 divisors (see below), whose sum is σ = 878168. Its totient is φ = 164256.

The previous prime is 389867. The next prime is 389891. The reversal of 389872 is 278983.

389872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6579 + ... + 6637.

2³⁸⁹⁸⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439084).

389872 is an abundant number, since it is smaller than the sum of its proper divisors (488296).

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

389872 is an equidigital number, since it uses as much as digits as its factorization.

389872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 68 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 389872 is about 624.3973094112. The cubic root of 389872 is about 73.0534418201.

Subtracting from 389872 its reverse (278983), we obtain a square (110889 = 333²).

The spelling of 389872 in words is "three hundred eighty-nine thousand, eight hundred seventy-two".