3914090221 has 2 divisors, whose sum is σ = 3914090222. Its totient is φ = 3914090220.

The previous prime is 3914090203. The next prime is 3914090239. The reversal of 3914090221 is 1220904193.

It is a balanced prime because it is at equal distance from previous prime (3914090203) and next prime (3914090239).

It can be written as a sum of positive squares in only one way, i.e., 2372664100 + 1541426121 = 48710^2 + 39261^2 .

It is a cyclic number.

It is not a de Polignac number, because 3914090221 - 2⁹ = 3914089709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3914093221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957045110 + 1957045111.

It is an arithmetic number, because the mean of its divisors is an integer number (1957045111).

Almost surely, 2^3914090221 is an apocalyptic number.

It is an amenable number.

3914090221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3914090221 is an equidigital number, since it uses as much as digits as its factorization.

3914090221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 3914090221 is about 62562.6903273828. The cubic root of 3914090221 is about 1575.9542678985.

The spelling of 3914090221 in words is "three billion, nine hundred fourteen million, ninety thousand, two hundred twenty-one".