8518889 has 2 divisors, whose sum is σ = 8518890. Its totient is φ = 8518888.

The previous prime is 8518883. The next prime is 8518907. The reversal of 8518889 is 9888158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8508889 + 10000 = 2917^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 8518889 - 2⁸ = 8518633 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8518883) 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 as a sum of consecutive naturals, namely, 4259444 + 4259445.

It is an arithmetic number, because the mean of its divisors is an integer number (4259445).

Almost surely, 2^8518889 is an apocalyptic number.

It is an amenable number.

8518889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8518889 is an equidigital number, since it uses as much as digits as its factorization.

8518889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 47.

The square root of 8518889 is about 2918.7135864966. The cubic root of 8518889 is about 204.2338165535.

The spelling of 8518889 in words is "eight million, five hundred eighteen thousand, eight hundred eighty-nine".