97899 has 4 divisors (see below), whose sum is σ = 130536. Its totient is φ = 65264.

The previous prime is 97883. The next prime is 97919. The reversal of 97899 is 99879.

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 97899 - 2⁴ = 97883 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 97899.

It is not an unprimeable number, because it can be changed into a prime (97829) 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, 16314 + ... + 16319.

It is an arithmetic number, because the mean of its divisors is an integer number (32634).

2⁹⁷⁸⁹⁹ is an apocalyptic number.

97899 is a deficient number, since it is larger than the sum of its proper divisors (32637).

97899 is a wasteful number, since it uses less digits than its factorization.

97899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32636.

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

The square root of 97899 is about 312.8881589322. Note that the first 3 decimals coincide. The cubic root of 97899 is about 46.0885189027.

Subtracting from 97899 its product of digits (40824), we obtain a palindrome (57075).

The spelling of 97899 in words is "ninety-seven thousand, eight hundred ninety-nine".