9985115899 has 12 divisors (see below), whose sum is σ = 10977918952. Its totient is φ = 9075274560.

The previous prime is 9985115893. The next prime is 9985115911.

9985115899 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9985115899 - 2⁵ = 9985115867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9985115899.

It is not an unprimeable number, because it can be changed into a prime (9985115893) 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, 789544 + ... + 802090.

Almost surely, 2^9985115899 is an apocalyptic number.

9985115899 is a deficient number, since it is larger than the sum of its proper divisors (992803053).

9985115899 is a wasteful number, since it uses less digits than its factorization.

9985115899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19146 (or 19135 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 64.

The square root of 9985115899 is about 99925.5517823144. The cubic root of 9985115899 is about 2153.3652651579.

The spelling of 9985115899 in words is "nine billion, nine hundred eighty-five million, one hundred fifteen thousand, eight hundred ninety-nine".