3919050221 has 2 divisors, whose sum is σ = 3919050222. Its totient is φ = 3919050220.

The previous prime is 3919050199. The next prime is 3919050251. The reversal of 3919050221 is 1220509193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3137568196 + 781482025 = 56014^2 + 27955^2 .

It is a cyclic number.

It is not a de Polignac number, because 3919050221 - 2¹⁴ = 3919033837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3919050251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959525110 + 1959525111.

It is an arithmetic number, because the mean of its divisors is an integer number (1959525111).

Almost surely, 2^3919050221 is an apocalyptic number.

It is an amenable number.

3919050221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3919050221 is an equidigital number, since it uses as much as digits as its factorization.

3919050221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 3919050221 is about 62602.3180161885. The cubic root of 3919050221 is about 1576.6196786938.

The spelling of 3919050221 in words is "three billion, nine hundred nineteen million, fifty thousand, two hundred twenty-one".