389545 has 12 divisors (see below), whose sum is σ = 507276. Its totient is φ = 287040.

The previous prime is 389539. The next prime is 389561. The reversal of 389545 is 545983.

It can be written as a sum of positive squares in 6 ways, for example, as 107584 + 281961 = 328^2 + 531^2 .

It is not a de Polignac number, because 389545 - 2⁵ = 389513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389545.

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 11 ways as a sum of consecutive naturals, for example, 615 + ... + 1075.

It is an arithmetic number, because the mean of its divisors is an integer number (42273).

2³⁸⁹⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

389545 is a deficient number, since it is larger than the sum of its proper divisors (117731).

389545 is a wasteful number, since it uses less digits than its factorization.

389545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 479 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 389545 is about 624.1354019762. The cubic root of 389545 is about 73.0330119035.

The spelling of 389545 in words is "three hundred eighty-nine thousand, five hundred forty-five".