9886666889 has 16 divisors (see below), whose sum is σ = 10993766784. Its totient is φ = 8815651200.

The previous prime is 9886666877. The next prime is 9886666901.

9886666889 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (9886666877) and next prime (9886666901).

It is a cyclic number.

It is not a de Polignac number, because 9886666889 - 2²⁰ = 9885618313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9886666849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111332 + ... + 179354.

It is an arithmetic number, because the mean of its divisors is an integer number (687110424).

Almost surely, 2^9886666889 is an apocalyptic number.

It is an amenable number.

9886666889 is a deficient number, since it is larger than the sum of its proper divisors (1107099895).

9886666889 is a wasteful number, since it uses less digits than its factorization.

9886666889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68288.

The product of its digits is 429981696, while the sum is 74.

The square root of 9886666889 is about 99431.7197326889. The cubic root of 9886666889 is about 2146.2647883153.

The spelling of 9886666889 in words is "nine billion, eight hundred eighty-six million, six hundred sixty-six thousand, eight hundred eighty-nine".