888472021 has 2 divisors, whose sum is σ = 888472022. Its totient is φ = 888472020.

The previous prime is 888471943. The next prime is 888472027. The reversal of 888472021 is 120274888.

888472021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 875331396 + 13140625 = 29586^2 + 3625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-888472021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (888472027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444236010 + 444236011.

It is an arithmetic number, because the mean of its divisors is an integer number (444236011).

Almost surely, 2^888472021 is an apocalyptic number.

It is an amenable number.

888472021 is a deficient number, since it is larger than the sum of its proper divisors (1).

888472021 is an equidigital number, since it uses as much as digits as its factorization.

888472021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 888472021 is about 29807.2477931123. The cubic root of 888472021 is about 961.3493831519.

The spelling of 888472021 in words is "eight hundred eighty-eight million, four hundred seventy-two thousand, twenty-one".