9887227889 has 24 divisors (see below), whose sum is σ = 12574590336. Its totient is φ = 7687428000.

The previous prime is 9887227877. The next prime is 9887227907.

9887227889 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-9887227889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9887527889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228584 + ... + 268374.

It is an arithmetic number, because the mean of its divisors is an integer number (523941264).

Almost surely, 2^9887227889 is an apocalyptic number.

It is an amenable number.

9887227889 is a deficient number, since it is larger than the sum of its proper divisors (2687362447).

9887227889 is a wasteful number, since it uses less digits than its factorization.

9887227889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40277 (or 40270 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 68.

The square root of 9887227889 is about 99434.5407240361. The cubic root of 9887227889 is about 2146.3053827774.

The spelling of 9887227889 in words is "nine billion, eight hundred eighty-seven million, two hundred twenty-seven thousand, eight hundred eighty-nine".