4440440393 has 2 divisors, whose sum is σ = 4440440394. Its totient is φ = 4440440392.

The previous prime is 4440440387. The next prime is 4440440483. The reversal of 4440440393 is 3930440444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3466501129 + 973939264 = 58877^2 + 31208^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440440393 - 2⁴ = 4440440377 is a prime.

It is a super-3 number, since 3×4440440393³ (a number of 30 digits) contains 333 as substring.

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 (4440440383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220220196 + 2220220197.

It is an arithmetic number, because the mean of its divisors is an integer number (2220220197).

Almost surely, 2^4440440393 is an apocalyptic number.

It is an amenable number.

4440440393 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440440393 is an equidigital number, since it uses as much as digits as its factorization.

4440440393 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 4440440393 is about 66636.6295141043. The cubic root of 4440440393 is about 1643.6474925392.

The spelling of 4440440393 in words is "four billion, four hundred forty million, four hundred forty thousand, three hundred ninety-three".