9999119998 has 32 divisors (see below), whose sum is σ = 18070806528. Its totient is φ = 4058856000.

The previous prime is 9999119983. The next prime is 9999120013. The reversal of 9999119998 is 8999119999.

It is an interprime number because it is at equal distance from previous prime (9999119983) and next prime (9999120013).

It is a self number, because there is not a number n which added to its sum of digits gives 9999119998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224703 + ... + 265498.

It is an arithmetic number, because the mean of its divisors is an integer number (564712704).

Almost surely, 2^9999119998 is an apocalyptic number.

9999119998 is a deficient number, since it is larger than the sum of its proper divisors (8071686530).

9999119998 is a wasteful number, since it uses less digits than its factorization.

9999119998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490288.

The product of its digits is 38263752, while the sum is 73.

The square root of 9999119998 is about 99995.5998931953. The cubic root of 9999119998 is about 2154.3714912835.

Subtracting from 9999119998 its reverse (8999119999), we obtain a palindrome (999999999).

The spelling of 9999119998 in words is "nine billion, nine hundred ninety-nine million, one hundred nineteen thousand, nine hundred ninety-eight".