4040444393 has 2 divisors, whose sum is σ = 4040444394. Its totient is φ = 4040444392.

The previous prime is 4040444381. The next prime is 4040444407. The reversal of 4040444393 is 3934440404.

4040444393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3949871104 + 90573289 = 62848^2 + 9517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4040444393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4040441393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020222196 + 2020222197.

It is an arithmetic number, because the mean of its divisors is an integer number (2020222197).

Almost surely, 2^4040444393 is an apocalyptic number.

It is an amenable number.

4040444393 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040444393 is an equidigital number, since it uses as much as digits as its factorization.

4040444393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 4040444393 is about 63564.4900317780. The cubic root of 4040444393 is about 1592.7332433747.

Adding to 4040444393 its reverse (3934440404), we get a palindrome (7974884797).

The spelling of 4040444393 in words is "four billion, forty million, four hundred forty-four thousand, three hundred ninety-three".