9985885899 has 16 divisors (see below), whose sum is σ = 14541993984. Its totient is φ = 6044940000.

The previous prime is 9985885883. The next prime is 9985885907.

9985885899 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9985885899 - 2⁴ = 9985885883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9985885849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149227 + ... + 205524.

It is an arithmetic number, because the mean of its divisors is an integer number (908874624).

Almost surely, 2^9985885899 is an apocalyptic number.

9985885899 is a deficient number, since it is larger than the sum of its proper divisors (4556108085).

9985885899 is a wasteful number, since it uses less digits than its factorization.

9985885899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355618.

The product of its digits is 671846400, while the sum is 78.

The square root of 9985885899 is about 99929.4045764309. The cubic root of 9985885899 is about 2153.4206158302.

The spelling of 9985885899 in words is "nine billion, nine hundred eighty-five million, eight hundred eighty-five thousand, eight hundred ninety-nine".