89799 has 8 divisors (see below), whose sum is σ = 123120. Its totient is φ = 58176.

The previous prime is 89797. The next prime is 89809. The reversal of 89799 is 99798.

It is a happy number.

89799 is nontrivially palindromic in base 11.

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

It is not a de Polignac number, because 89799 - 2¹ = 89797 is a prime.

89799 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 89799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89797) 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 7 ways as a sum of consecutive naturals, for example, 294 + ... + 515.

It is an arithmetic number, because the mean of its divisors is an integer number (15390).

2⁸⁹⁷⁹⁹ is an apocalyptic number.

89799 is a deficient number, since it is larger than the sum of its proper divisors (33321).

89799 is a wasteful number, since it uses less digits than its factorization.

89799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849.

The product of its digits is 40824, while the sum is 42.

The square root of 89799 is about 299.6648127492. The cubic root of 89799 is about 44.7806610302.

Subtracting 89799 from its reverse (99798), we obtain a palindrome (9999).

It can be divided in two parts, 89 and 799, that added together give a palindrome (888).

The spelling of 89799 in words is "eighty-nine thousand, seven hundred ninety-nine".