89239 has 4 divisors (see below), whose sum is σ = 89856. Its totient is φ = 88624.

The previous prime is 89237. The next prime is 89261. The reversal of 89239 is 93298.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93298 = 2 ⋅46649.

It is a cyclic number.

It is not a de Polignac number, because 89239 - 2¹ = 89237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89231) 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, 42 + ... + 424.

It is an arithmetic number, because the mean of its divisors is an integer number (22464).

2⁸⁹²³⁹ is an apocalyptic number.

89239 is a deficient number, since it is larger than the sum of its proper divisors (617).

89239 is a wasteful number, since it uses less digits than its factorization.

89239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its digits is 3888, while the sum is 31.

The square root of 89239 is about 298.7289741555. The cubic root of 89239 is about 44.6873805562.

The spelling of 89239 in words is "eighty-nine thousand, two hundred thirty-nine".