9888888885 has 16 divisors (see below), whose sum is σ = 15823776384. Its totient is φ = 5273556032.

The previous prime is 9888888881. The next prime is 9888888887. The reversal of 9888888885 is 5888888889.

9888888885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9888888885 - 2² = 9888888881 is a prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9888888885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9888888881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163744 + ... + 215846.

It is an arithmetic number, because the mean of its divisors is an integer number (988986024).

Almost surely, 2^9888888885 is an apocalyptic number.

It is an amenable number.

9888888885 is a deficient number, since it is larger than the sum of its proper divisors (5934887499).

9888888885 is a wasteful number, since it uses less digits than its factorization.

9888888885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64764.

The product of its digits is 754974720, while the sum is 78.

The square root of 9888888885 is about 99442.8925816219. The cubic root of 9888888885 is about 2146.4255649316.

The spelling of 9888888885 in words is "nine billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-five".