239981589 has 16 divisors (see below), whose sum is σ = 359197440. Its totient is φ = 158336640.

The previous prime is 239981557. The next prime is 239981617. The reversal of 239981589 is 985189932.

239981589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 239981589 - 2⁵ = 239981557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239981549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43197 + ... + 48434.

It is an arithmetic number, because the mean of its divisors is an integer number (22449840).

Almost surely, 2^239981589 is an apocalyptic number.

It is an amenable number.

239981589 is a deficient number, since it is larger than the sum of its proper divisors (119215851).

239981589 is an equidigital number, since it uses as much as digits as its factorization.

239981589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91737 (or 91731 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 239981589 is about 15491.3391609635. The cubic root of 239981589 is about 621.4306098795.

The spelling of 239981589 in words is "two hundred thirty-nine million, nine hundred eighty-one thousand, five hundred eighty-nine".