3838391 has 2 divisors, whose sum is σ = 3838392. Its totient is φ = 3838390.

The previous prime is 3838381. The next prime is 3838397. The reversal of 3838391 is 1938383.

It is a strong prime.

It is an emirp because it is prime and its reverse (1938383) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3838391 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3838397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1919195 + 1919196.

It is an arithmetic number, because the mean of its divisors is an integer number (1919196).

Almost surely, 2^3838391 is an apocalyptic number.

3838391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3838391 is an equidigital number, since it uses as much as digits as its factorization.

3838391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 3838391 is about 1959.1812065248. The cubic root of 3838391 is about 156.5728309869.

The spelling of 3838391 in words is "three million, eight hundred thirty-eight thousand, three hundred ninety-one".