8987878589 has 2 divisors, whose sum is σ = 8987878590. Its totient is φ = 8987878588.

The previous prime is 8987878513. The next prime is 8987878609. The reversal of 8987878589 is 9858787898.

8987878589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5758229689 + 3229648900 = 75883^2 + 56830^2 .

It is a cyclic number.

It is not a de Polignac number, because 8987878589 - 2²⁸ = 8719443133 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8987877589) 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 as a sum of consecutive naturals, namely, 4493939294 + 4493939295.

It is an arithmetic number, because the mean of its divisors is an integer number (4493939295).

Almost surely, 2^8987878589 is an apocalyptic number.

It is an amenable number.

8987878589 is a deficient number, since it is larger than the sum of its proper divisors (1).

8987878589 is an equidigital number, since it uses as much as digits as its factorization.

8987878589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 650280960, while the sum is 77.

The square root of 8987878589 is about 94804.4228345914. The cubic root of 8987878589 is about 2079.1495682811.

The spelling of 8987878589 in words is "eight billion, nine hundred eighty-seven million, eight hundred seventy-eight thousand, five hundred eighty-nine".