99799898 has 16 divisors (see below), whose sum is σ = 170410176. Its totient is φ = 43391040.

The previous prime is 99799891. The next prime is 99799907. The reversal of 99799898 is 89899799.

It is not an unprimeable number, because it can be changed into a prime (99799891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98111 + ... + 99122.

It is an arithmetic number, because the mean of its divisors is an integer number (10650636).

Almost surely, 2^99799898 is an apocalyptic number.

99799898 is a deficient number, since it is larger than the sum of its proper divisors (70610278).

99799898 is a wasteful number, since it uses less digits than its factorization.

99799898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197269.

The product of its digits is 26453952, while the sum is 68.

The square root of 99799898 is about 9989.9898898848. The cubic root of 99799898 is about 463.8490795585.

Subtracting from 99799898 its reverse (89899799), we obtain a palindrome (9900099).

It can be divided in two parts, 99 and 799898, that added together give a palindrome (799997).

The spelling of 99799898 in words is "ninety-nine million, seven hundred ninety-nine thousand, eight hundred ninety-eight".