98799 has 4 divisors (see below), whose sum is σ = 131736. Its totient is φ = 65864.

The previous prime is 98779. The next prime is 98801. The reversal of 98799 is 99789.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98799 - 2⁸ = 98543 is a prime.

It is a super-2 number, since 2×98799² = 19522484802, which contains 22 as substring.

It is a D-number.

98799 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 98799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98729) 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, 16464 + ... + 16469.

It is an arithmetic number, because the mean of its divisors is an integer number (32934).

2⁹⁸⁷⁹⁹ is an apocalyptic number.

98799 is a deficient number, since it is larger than the sum of its proper divisors (32937).

98799 is a wasteful number, since it uses less digits than its factorization.

98799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32936.

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

The square root of 98799 is about 314.3230821941. The cubic root of 98799 is about 46.2293211672.

Subtracting from 98799 its product of digits (40824), we obtain a palindrome (57975).

Subtracting 98799 from its reverse (99789), we obtain a triangular number (990 = T₄₄).

The spelling of 98799 in words is "ninety-eight thousand, seven hundred ninety-nine".