8782668989 has 2 divisors, whose sum is σ = 8782668990. Its totient is φ = 8782668988.

The previous prime is 8782668949. The next prime is 8782669057. The reversal of 8782668989 is 9898662878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8220504889 + 562164100 = 90667^2 + 23710^2 .

It is a cyclic number.

It is not a de Polignac number, because 8782668989 - 2⁸ = 8782668733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8782668949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4391334494 + 4391334495.

It is an arithmetic number, because the mean of its divisors is an integer number (4391334495).

Almost surely, 2^8782668989 is an apocalyptic number.

It is an amenable number.

8782668989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8782668989 is an equidigital number, since it uses as much as digits as its factorization.

8782668989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 167215104, while the sum is 71.

The square root of 8782668989 is about 93715.8950712204. The cubic root of 8782668989 is about 2063.2040024590.

The spelling of 8782668989 in words is "eight billion, seven hundred eighty-two million, six hundred sixty-eight thousand, nine hundred eighty-nine".