88888888889 has 4 divisors (see below), whose sum is σ = 88906388340. Its totient is φ = 88871389440.

The previous prime is 88888888859. The next prime is 88888888901. The reversal of 88888888889 is 98888888888.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45057279289 + 43831609600 = 212267^2 + 209360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88888888889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (88888888859) 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 3 ways as a sum of consecutive naturals, for example, 8742104 + ... + 8752265.

It is an arithmetic number, because the mean of its divisors is an integer number (22226597085).

Almost surely, 2^88888888889 is an apocalyptic number.

It is an amenable number.

88888888889 is a deficient number, since it is larger than the sum of its proper divisors (17499451).

88888888889 is a wasteful number, since it uses less digits than its factorization.

88888888889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17499450.

The product of its digits is 9663676416, while the sum is 89.

Subtracting 88888888889 from its reverse (98888888888), we obtain a palindrome (9999999999).

The spelling of 88888888889 in words is "eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-nine".