3920893849 has 2 divisors, whose sum is σ = 3920893850. Its totient is φ = 3920893848.

The previous prime is 3920893813. The next prime is 3920893859. The reversal of 3920893849 is 9483980293.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2248656400 + 1672237449 = 47420^2 + 40893^2 .

It is a cyclic number.

It is not a de Polignac number, because 3920893849 - 2¹⁷ = 3920762777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3920893849.

It is not a weakly prime, because it can be changed into another prime (3920893859) 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, 1960446924 + 1960446925.

It is an arithmetic number, because the mean of its divisors is an integer number (1960446925).

Almost surely, 2^3920893849 is an apocalyptic number.

It is an amenable number.

3920893849 is a deficient number, since it is larger than the sum of its proper divisors (1).

3920893849 is an equidigital number, since it uses as much as digits as its factorization.

3920893849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The square root of 3920893849 is about 62617.0412028547. The cubic root of 3920893849 is about 1576.8668682204.

The spelling of 3920893849 in words is "three billion, nine hundred twenty million, eight hundred ninety-three thousand, eight hundred forty-nine".