9889875780 has 96 divisors (see below), whose sum is σ = 28479892224. Its totient is φ = 2562430464.

The previous prime is 9889875757. The next prime is 9889875833. The reversal of 9889875780 is 875789889.

9889875780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1824354 + ... + 1829766.

It is an arithmetic number, because the mean of its divisors is an integer number (296665544).

Almost surely, 2^9889875780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9889875780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14239946112).

9889875780 is an abundant number, since it is smaller than the sum of its proper divisors (18590016444).

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

9889875780 is a wasteful number, since it uses less digits than its factorization.

9889875780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285 (or 6283 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 69.

The square root of 9889875780 is about 99447.8545771602. The cubic root of 9889875780 is about 2146.4969658146.

The spelling of 9889875780 in words is "nine billion, eight hundred eighty-nine million, eight hundred seventy-five thousand, seven hundred eighty".