9999119999 has 8 divisors (see below), whose sum is σ = 11070939648. Its totient is φ = 8954435160.

The previous prime is 9999119983. The next prime is 9999120013.

9999119999 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9999119999 - 2⁴ = 9999119983 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999119909) 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, 6782927 + ... + 6784400.

It is an arithmetic number, because the mean of its divisors is an integer number (1383867456).

Almost surely, 2^9999119999 is an apocalyptic number.

9999119999 is a deficient number, since it is larger than the sum of its proper divisors (1071819649).

9999119999 is a wasteful number, since it uses less digits than its factorization.

9999119999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13567405.

The product of its digits is 43046721, while the sum is 74.

The square root of 9999119999 is about 99995.5998981955. The cubic root of 9999119999 is about 2154.3714913553.

The spelling of 9999119999 in words is "nine billion, nine hundred ninety-nine million, one hundred nineteen thousand, nine hundred ninety-nine".