89993 has 4 divisors (see below), whose sum is σ = 92928. Its totient is φ = 87060.

The previous prime is 89989. The next prime is 90001. The reversal of 89993 is 39998.

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 89993 - 2² = 89989 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89923) 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, 1421 + ... + 1482.

It is an arithmetic number, because the mean of its divisors is an integer number (23232).

2⁸⁹⁹⁹³ is an apocalyptic number.

It is an amenable number.

89993 is a deficient number, since it is larger than the sum of its proper divisors (2935).

89993 is a wasteful number, since it uses less digits than its factorization.

89993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934.

The product of its digits is 17496, while the sum is 38.

The square root of 89993 is about 299.9883331065. The cubic root of 89993 is about 44.8128855898.

It can be divided in two parts, 8 and 9993, that added together give a palindrome (10001).

The spelling of 89993 in words is "eighty-nine thousand, nine hundred ninety-three".