9999998199 has 6 divisors (see below), whose sum is σ = 14444441856. Its totient is φ = 6666665460.

The previous prime is 9999998191. The next prime is 9999998231. The reversal of 9999998199 is 9918999999.

It is not a de Polignac number, because 9999998199 - 2³ = 9999998191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999998191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555555447 + ... + 555555464.

It is an arithmetic number, because the mean of its divisors is an integer number (2407406976).

Almost surely, 2^9999998199 is an apocalyptic number.

9999998199 is a deficient number, since it is larger than the sum of its proper divisors (4444443657).

9999998199 is a wasteful number, since it uses less digits than its factorization.

9999998199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111110917 (or 1111110914 counting only the distinct ones).

The product of its digits is 344373768, while the sum is 81.

The square root of 9999998199 is about 99999.9909949996. The cubic root of 9999998199 is about 2154.4345606940.

The spelling of 9999998199 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, one hundred ninety-nine".