99589 has 8 divisors (see below), whose sum is σ = 116928. Its totient is φ = 83040.

The previous prime is 99581. The next prime is 99607. The reversal of 99589 is 98599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99589 - 2³ = 99581 is a prime.

99589 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114 + ... + 460.

It is an arithmetic number, because the mean of its divisors is an integer number (14616).

2⁹⁹⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

99589 is a deficient number, since it is larger than the sum of its proper divisors (17339).

99589 is a wasteful number, since it uses less digits than its factorization.

99589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its digits is 29160, while the sum is 40.

The square root of 99589 is about 315.5772488631. The cubic root of 99589 is about 46.3522112517.

Subtracting from 99589 its reverse (98599), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 99 and 589, that multiplied together give a triangular number (58311 = T₃₄₁).

The spelling of 99589 in words is "ninety-nine thousand, five hundred eighty-nine".