390589 has 4 divisors (see below), whose sum is σ = 391840. Its totient is φ = 389340.

The previous prime is 390581. The next prime is 390647. The reversal of 390589 is 985093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 390589 - 2³ = 390581 is a prime.

It is a Duffinian number.

390589 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390581) 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, 304 + ... + 934.

It is an arithmetic number, because the mean of its divisors is an integer number (97960).

390589 is a Friedman number, since it can be written as 5^8-9-9*(3+0), using all its digits and the basic arithmetic operations.

2³⁹⁰⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

390589 is a deficient number, since it is larger than the sum of its proper divisors (1251).

390589 is an equidigital number, since it uses as much as digits as its factorization.

390589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 390589 is about 624.9711993364. The cubic root of 390589 is about 73.0981977407.

It can be divided in two parts, 390 and 589, that added together give a palindrome (979).

The spelling of 390589 in words is "three hundred ninety thousand, five hundred eighty-nine".