8878886721 has 12 divisors (see below), whose sum is σ = 12829909248. Its totient is φ = 5917019064.

The previous prime is 8878886717. The next prime is 8878886741. The reversal of 8878886721 is 1276888788.

It is not a de Polignac number, because 8878886721 - 2² = 8878886717 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8878886711) 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 in 11 ways as a sum of consecutive naturals, for example, 161265 + ... + 209198.

It is an arithmetic number, because the mean of its divisors is an integer number (1069159104).

Almost surely, 2^8878886721 is an apocalyptic number.

It is an amenable number.

8878886721 is a deficient number, since it is larger than the sum of its proper divisors (3951022527).

8878886721 is a wasteful number, since it uses less digits than its factorization.

8878886721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373132 (or 373129 counting only the distinct ones).

The product of its digits is 19267584, while the sum is 63.

The square root of 8878886721 is about 94227.8447222476. The cubic root of 8878886721 is about 2070.7110691610.

The spelling of 8878886721 in words is "eight billion, eight hundred seventy-eight million, eight hundred eighty-six thousand, seven hundred twenty-one".