3885221 has 2 divisors, whose sum is σ = 3885222. Its totient is φ = 3885220.

The previous prime is 3885187. The next prime is 3885223. The reversal of 3885221 is 1225883.

3885221 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., 2208196 + 1677025 = 1486^2 + 1295^2 .

It is an emirp because it is prime and its reverse (1225883) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3885221 is a prime.

Together with 3885223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3885223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1942610 + 1942611.

It is an arithmetic number, because the mean of its divisors is an integer number (1942611).

Almost surely, 2^3885221 is an apocalyptic number.

It is an amenable number.

3885221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3885221 is an equidigital number, since it uses as much as digits as its factorization.

3885221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 29.

The square root of 3885221 is about 1971.0963954104. The cubic root of 3885221 is about 157.2070105237.

The spelling of 3885221 in words is "three million, eight hundred eighty-five thousand, two hundred twenty-one".