389925 has 18 divisors (see below), whose sum is σ = 698802. Its totient is φ = 207840.

The previous prime is 389923. The next prime is 389927. The reversal of 389925 is 529983.

It is an interprime number because it is at equal distance from previous prime (389923) and next prime (389927).

It can be written as a sum of positive squares in 3 ways, for example, as 19044 + 370881 = 138^2 + 609^2 .

It is not a de Polignac number, because 389925 - 2¹ = 389923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389925.

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 389925.

It is not an unprimeable number, because it can be changed into a prime (389923) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 642 + ... + 1091.

389925 is a Friedman number, since it can be written as 29-9^3+5^8, using all its digits and the basic arithmetic operations.

2³⁸⁹⁹²⁵ is an apocalyptic number.

It is an amenable number.

389925 is a deficient number, since it is larger than the sum of its proper divisors (308877).

389925 is a wasteful number, since it uses less digits than its factorization.

389925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1741 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 389925 is about 624.4397488950. The cubic root of 389925 is about 73.0567520150.

The spelling of 389925 in words is "three hundred eighty-nine thousand, nine hundred twenty-five".