8899999985 has 4 divisors (see below), whose sum is σ = 10679999988. Its totient is φ = 7119999984.

The previous prime is 8899999981. The next prime is 8900000027. The reversal of 8899999985 is 5899999988.

8899999985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4876508224 + 4023491761 = 69832^2 + 63431^2 .

It is a cyclic number.

It is not a de Polignac number, because 8899999985 - 2² = 8899999981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8899999981) 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, 889999994 + ... + 890000003.

It is an arithmetic number, because the mean of its divisors is an integer number (2669999997).

Almost surely, 2^8899999985 is an apocalyptic number.

It is an amenable number.

8899999985 is a deficient number, since it is larger than the sum of its proper divisors (1780000003).

8899999985 is a wasteful number, since it uses less digits than its factorization.

8899999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780000002.

The product of its digits is 1360488960, while the sum is 83.

The square root of 8899999985 is about 94339.8112410662. The cubic root of 8899999985 is about 2072.3510968950.

The spelling of 8899999985 in words is "eight billion, eight hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-five".