4039539109 has 2 divisors, whose sum is σ = 4039539110. Its totient is φ = 4039539108.

The previous prime is 4039539089. The next prime is 4039539157. The reversal of 4039539109 is 9019359304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2477550625 + 1561988484 = 49775^2 + 39522^2 .

It is a cyclic number.

It is not a de Polignac number, because 4039539109 - 2⁹ = 4039538597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4039539809) 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, 2019769554 + 2019769555.

It is an arithmetic number, because the mean of its divisors is an integer number (2019769555).

Almost surely, 2^4039539109 is an apocalyptic number.

It is an amenable number.

4039539109 is a deficient number, since it is larger than the sum of its proper divisors (1).

4039539109 is an equidigital number, since it uses as much as digits as its factorization.

4039539109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 4039539109 is about 63557.3686443987. The cubic root of 4039539109 is about 1592.6142809140.

The spelling of 4039539109 in words is "four billion, thirty-nine million, five hundred thirty-nine thousand, one hundred nine".