88989 has 4 divisors (see below), whose sum is σ = 118656. Its totient is φ = 59324.

The previous prime is 88969. The next prime is 88993. The reversal of 88989 is 98988.

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 88989 - 2⁷ = 88861 is a prime.

It is a D-number.

It is a Curzon number.

88989 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 88989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14829 + ... + 14834.

It is an arithmetic number, because the mean of its divisors is an integer number (29664).

2⁸⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

88989 is a deficient number, since it is larger than the sum of its proper divisors (29667).

88989 is a wasteful number, since it uses less digits than its factorization.

88989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29666.

The product of its digits is 41472, while the sum is 42.

The square root of 88989 is about 298.3102411920. The cubic root of 88989 is about 44.6456114720.

Subtracting 88989 from its reverse (98988), we obtain a palindrome (9999).

The spelling of 88989 in words is "eighty-eight thousand, nine hundred eighty-nine".