89321 has 4 divisors (see below), whose sum is σ = 90000. Its totient is φ = 88644.

The previous prime is 89317. The next prime is 89329. The reversal of 89321 is 12398.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12398 = 2 ⋅6199.

It is a cyclic number.

It is not a de Polignac number, because 89321 - 2² = 89317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89329) 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, 71 + ... + 428.

It is an arithmetic number, because the mean of its divisors is an integer number (22500).

2⁸⁹³²¹ is an apocalyptic number.

It is an amenable number.

89321 is a deficient number, since it is larger than the sum of its proper divisors (679).

89321 is a wasteful number, since it uses less digits than its factorization.

89321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its digits is 432, while the sum is 23.

The square root of 89321 is about 298.8661907945. The cubic root of 89321 is about 44.7010638240.

Subtracting from 89321 its sum of digits (23), we obtain a palindrome (89298).

The spelling of 89321 in words is "eighty-nine thousand, three hundred twenty-one".