123489589 has 4 divisors (see below), whose sum is σ = 124033824. Its totient is φ = 122945356.

The previous prime is 123489577. The next prime is 123489623. The reversal of 123489589 is 985984321.

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 123489589 - 2⁵ = 123489557 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 (123480589) 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, 271777 + ... + 272230.

It is an arithmetic number, because the mean of its divisors is an integer number (31008456).

Almost surely, 2^123489589 is an apocalyptic number.

It is an amenable number.

123489589 is a deficient number, since it is larger than the sum of its proper divisors (544235).

123489589 is an equidigital number, since it uses as much as digits as its factorization.

123489589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544234.

The product of its digits is 622080, while the sum is 49.

The square root of 123489589 is about 11112.5869625394. The cubic root of 123489589 is about 497.9779523365.

The spelling of 123489589 in words is "one hundred twenty-three million, four hundred eighty-nine thousand, five hundred eighty-nine".