408589 has 4 divisors (see below), whose sum is σ = 411840. Its totient is φ = 405340.

The previous prime is 408563. The next prime is 408607. The reversal of 408589 is 985804.

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.

It is a cyclic number.

It is not a de Polignac number, because 408589 - 2⁷ = 408461 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 (408539) 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, 1429 + ... + 1690.

It is an arithmetic number, because the mean of its divisors is an integer number (102960).

2⁴⁰⁸⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

408589 is a deficient number, since it is larger than the sum of its proper divisors (3251).

408589 is a wasteful number, since it uses less digits than its factorization.

408589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 408589 is about 639.2096682623. The cubic root of 408589 is about 74.2042688312.

The spelling of 408589 in words is "four hundred eight thousand, five hundred eighty-nine".