998808899 has 12 divisors (see below), whose sum is σ = 1106525952. Its totient is φ = 900844560.

The previous prime is 998808893. The next prime is 998808907.

998808899 is nontrivially palindromic in base 10.

998808899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 998808899 - 2²⁴ = 982031683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998808893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17132 + ... + 47865.

It is an arithmetic number, because the mean of its divisors is an integer number (92210496).

Almost surely, 2^998808899 is an apocalyptic number.

998808899 is a deficient number, since it is larger than the sum of its proper divisors (107717053).

998808899 is a wasteful number, since it uses less digits than its factorization.

998808899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65146 (or 65135 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 68.

The square root of 998808899 is about 31603.9380299354. The cubic root of 998808899 is about 999.6028085932.

The spelling of 998808899 in words is "nine hundred ninety-eight million, eight hundred eight thousand, eight hundred ninety-nine".