99799798 has 16 divisors (see below), whose sum is σ = 173986560. Its totient is φ = 42046056.

The previous prime is 99799789. The next prime is 99799813. The reversal of 99799798 is 89799799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59586 + ... + 61237.

It is an arithmetic number, because the mean of its divisors is an integer number (10874160).

Almost surely, 2^99799798 is an apocalyptic number.

99799798 is a deficient number, since it is larger than the sum of its proper divisors (74186762).

99799798 is a wasteful number, since it uses less digits than its factorization.

99799798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120891.

The product of its digits is 23147208, while the sum is 67.

The square root of 99799798 is about 9989.9848848735. The cubic root of 99799798 is about 463.8489246321.

Subtracting from 99799798 its reverse (89799799), we obtain a palindrome (9999999).

The spelling of 99799798 in words is "ninety-nine million, seven hundred ninety-nine thousand, seven hundred ninety-eight".