3793869721 has 2 divisors, whose sum is σ = 3793869722. Its totient is φ = 3793869720.

The previous prime is 3793869613. The next prime is 3793869731. The reversal of 3793869721 is 1279683973.

It is a happy number.

3793869721 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., 3489855625 + 304014096 = 59075^2 + 17436^2 .

It is a cyclic number.

It is not a de Polignac number, because 3793869721 - 2¹⁵ = 3793836953 is a prime.

It is not a weakly prime, because it can be changed into another prime (3793869731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1896934860 + 1896934861.

It is an arithmetic number, because the mean of its divisors is an integer number (1896934861).

Almost surely, 2^3793869721 is an apocalyptic number.

It is an amenable number.

3793869721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3793869721 is an equidigital number, since it uses as much as digits as its factorization.

3793869721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 55.

The square root of 3793869721 is about 61594.3968312054. The cubic root of 3793869721 is about 1559.6511548761.

The spelling of 3793869721 in words is "three billion, seven hundred ninety-three million, eight hundred sixty-nine thousand, seven hundred twenty-one".