3864449 has 2 divisors, whose sum is σ = 3864450. Its totient is φ = 3864448.

The previous prime is 3864433. The next prime is 3864451. The reversal of 3864449 is 9444683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3312400 + 552049 = 1820^2 + 743^2 .

It is an emirp because it is prime and its reverse (9444683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3864449 - 2⁴ = 3864433 is a prime.

Together with 3864451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3864409) 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, 1932224 + 1932225.

It is an arithmetic number, because the mean of its divisors is an integer number (1932225).

Almost surely, 2^3864449 is an apocalyptic number.

It is an amenable number.

3864449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3864449 is an equidigital number, since it uses as much as digits as its factorization.

3864449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 3864449 is about 1965.8201850627. The cubic root of 3864449 is about 156.9263451554.

The spelling of 3864449 in words is "three million, eight hundred sixty-four thousand, four hundred forty-nine".