389725 has 24 divisors (see below), whose sum is σ = 589248. Its totient is φ = 249600.

The previous prime is 389723. The next prime is 389743. The reversal of 389725 is 527983.

It is not a de Polignac number, because 389725 - 2¹ = 389723 is a prime.

It is a Duffinian number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2910 + ... + 3040.

It is an arithmetic number, because the mean of its divisors is an integer number (24552).

389725 is a Friedman number, since it can be written as 5^8-9*(7+3)^2, using all its digits and the basic arithmetic operations.

2³⁸⁹⁷²⁵ is an apocalyptic number.

389725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

389725 is a deficient number, since it is larger than the sum of its proper divisors (199523).

389725 is a wasteful number, since it uses less digits than its factorization.

389725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 160 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 389725 is about 624.2795848016. The cubic root of 389725 is about 73.0442591431.

The spelling of 389725 in words is "three hundred eighty-nine thousand, seven hundred twenty-five".