3816389 has 2 divisors, whose sum is σ = 3816390. Its totient is φ = 3816388.

The previous prime is 3816383. The next prime is 3816391. The reversal of 3816389 is 9836183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2512225 + 1304164 = 1585^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 3816389 - 2⁸ = 3816133 is a prime.

Together with 3816391, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3816383) 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, 1908194 + 1908195.

It is an arithmetic number, because the mean of its divisors is an integer number (1908195).

Almost surely, 2^3816389 is an apocalyptic number.

It is an amenable number.

3816389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3816389 is an equidigital number, since it uses as much as digits as its factorization.

3816389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 3816389 is about 1953.5580359948. The cubic root of 3816389 is about 156.2730943997.

The spelling of 3816389 in words is "three million, eight hundred sixteen thousand, three hundred eighty-nine".