3974399449 has 2 divisors, whose sum is σ = 3974399450. Its totient is φ = 3974399448.

The previous prime is 3974399441. The next prime is 3974399459. The reversal of 3974399449 is 9449934793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2631690000 + 1342709449 = 51300^2 + 36643^2 .

It is a cyclic number.

It is not a de Polignac number, because 3974399449 - 2³ = 3974399441 is a prime.

It is not a weakly prime, because it can be changed into another prime (3974399441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987199724 + 1987199725.

It is an arithmetic number, because the mean of its divisors is an integer number (1987199725).

Almost surely, 2^3974399449 is an apocalyptic number.

It is an amenable number.

3974399449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3974399449 is an equidigital number, since it uses as much as digits as its factorization.

3974399449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 61.

The square root of 3974399449 is about 63042.8382054615. The cubic root of 3974399449 is about 1584.0072729543.

The spelling of 3974399449 in words is "three billion, nine hundred seventy-four million, three hundred ninety-nine thousand, four hundred forty-nine".