888868221 has 16 divisors (see below), whose sum is σ = 1202671680. Its totient is φ = 583839360.

The previous prime is 888868207. The next prime is 888868223. The reversal of 888868221 is 122868888.

It is a happy number.

It is not a de Polignac number, because 888868221 - 2⁶ = 888868157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (888868223) 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 in 15 ways as a sum of consecutive naturals, for example, 300970 + ... + 303908.

It is an arithmetic number, because the mean of its divisors is an integer number (75166980).

Almost surely, 2^888868221 is an apocalyptic number.

It is an amenable number.

888868221 is a deficient number, since it is larger than the sum of its proper divisors (313803459).

888868221 is a wasteful number, since it uses less digits than its factorization.

888868221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396.

The product of its digits is 786432, while the sum is 51.

The square root of 888868221 is about 29813.8930869486. The cubic root of 888868221 is about 961.4922614170.

The spelling of 888868221 in words is "eight hundred eighty-eight million, eight hundred sixty-eight thousand, two hundred twenty-one".