8781866879 has 2 divisors, whose sum is σ = 8781866880. Its totient is φ = 8781866878.

The previous prime is 8781866833. The next prime is 8781866897. The reversal of 8781866879 is 9786681878.

8781866879 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (8781866897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8781866879 - 2³² = 4486899583 is a prime.

It is a super-4 number, since 4×8781866879⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8781866179) 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, 4390933439 + 4390933440.

It is an arithmetic number, because the mean of its divisors is an integer number (4390933440).

Almost surely, 2^8781866879 is an apocalyptic number.

8781866879 is a deficient number, since it is larger than the sum of its proper divisors (1).

8781866879 is an equidigital number, since it uses as much as digits as its factorization.

8781866879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65028096, while the sum is 68.

The square root of 8781866879 is about 93711.6154966928. The cubic root of 8781866879 is about 2063.1411906134.

The spelling of 8781866879 in words is "eight billion, seven hundred eighty-one million, eight hundred sixty-six thousand, eight hundred seventy-nine".