8638864079 has 2 divisors, whose sum is σ = 8638864080. Its totient is φ = 8638864078.

The previous prime is 8638864063. The next prime is 8638864097. The reversal of 8638864079 is 9704688368.

8638864079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (8638864097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8638864079 - 2⁴ = 8638864063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8638864099) 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, 4319432039 + 4319432040.

It is an arithmetic number, because the mean of its divisors is an integer number (4319432040).

Almost surely, 2^8638864079 is an apocalyptic number.

8638864079 is a deficient number, since it is larger than the sum of its proper divisors (1).

8638864079 is an equidigital number, since it uses as much as digits as its factorization.

8638864079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The square root of 8638864079 is about 92945.4898260265. The cubic root of 8638864079 is about 2051.8812062566.

The spelling of 8638864079 in words is "eight billion, six hundred thirty-eight million, eight hundred sixty-four thousand, seventy-nine".