9885885888 has 56 divisors (see below), whose sum is σ = 26794388880. Its totient is φ = 3214919680.

The previous prime is 9885885881. The next prime is 9885885923. The reversal of 9885885888 is 8885885889.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9885885881) 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, 620043 + ... + 635786.

It is an arithmetic number, because the mean of its divisors is an integer number (478471230).

Almost surely, 2^9885885888 is an apocalyptic number.

It is an amenable number.

9885885888 is an abundant number, since it is smaller than the sum of its proper divisors (16908502992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9885885888 is a wasteful number, since it uses less digits than its factorization.

9885885888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255885 (or 1255875 counting only the distinct ones).

The product of its digits is 471859200, while the sum is 75.

The square root of 9885885888 is about 99427.7923319230. The cubic root of 9885885888 is about 2146.2082718268.

Subtracting from 9885885888 its reverse (8885885889), we obtain a palindrome (999999999).

The spelling of 9885885888 in words is "nine billion, eight hundred eighty-five million, eight hundred eighty-five thousand, eight hundred eighty-eight".