3941258221 has 2 divisors, whose sum is σ = 3941258222. Its totient is φ = 3941258220.

The previous prime is 3941258197. The next prime is 3941258227. The reversal of 3941258221 is 1228521493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3052562500 + 888695721 = 55250^2 + 29811^2 .

It is an emirp because it is prime and its reverse (1228521493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3941258221 - 2¹⁷ = 3941127149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3941258227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970629110 + 1970629111.

It is an arithmetic number, because the mean of its divisors is an integer number (1970629111).

Almost surely, 2^3941258221 is an apocalyptic number.

It is an amenable number.

3941258221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3941258221 is an equidigital number, since it uses as much as digits as its factorization.

3941258221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 3941258221 is about 62779.4410695094. The cubic root of 3941258221 is about 1579.5921370184.

The spelling of 3941258221 in words is "three billion, nine hundred forty-one million, two hundred fifty-eight thousand, two hundred twenty-one".