3793986221 has 2 divisors, whose sum is σ = 3793986222. Its totient is φ = 3793986220.

The previous prime is 3793986113. The next prime is 3793986227. The reversal of 3793986221 is 1226893973.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2133423721 + 1660562500 = 46189^2 + 40750^2 .

It is a cyclic number.

It is not a de Polignac number, because 3793986221 - 2²² = 3789791917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3793986221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3793986227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1896993110 + 1896993111.

It is an arithmetic number, because the mean of its divisors is an integer number (1896993111).

Almost surely, 2^3793986221 is an apocalyptic number.

It is an amenable number.

3793986221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3793986221 is an equidigital number, since it uses as much as digits as its factorization.

3793986221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 3793986221 is about 61595.3425268502. The cubic root of 3793986221 is about 1559.6671190071.

The spelling of 3793986221 in words is "three billion, seven hundred ninety-three million, nine hundred eighty-six thousand, two hundred twenty-one".