4082985509 has 2 divisors, whose sum is σ = 4082985510. Its totient is φ = 4082985508.

The previous prime is 4082985481. The next prime is 4082985521. The reversal of 4082985509 is 9055892804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2649984484 + 1433001025 = 51478^2 + 37855^2 .

It is a cyclic number.

It is not a de Polignac number, because 4082985509 - 2²⁸ = 3814550053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4082985589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2041492754 + 2041492755.

It is an arithmetic number, because the mean of its divisors is an integer number (2041492755).

Almost surely, 2^4082985509 is an apocalyptic number.

It is an amenable number.

4082985509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4082985509 is an equidigital number, since it uses as much as digits as its factorization.

4082985509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The square root of 4082985509 is about 63898.2433952609. The cubic root of 4082985509 is about 1598.3036068598.

The spelling of 4082985509 in words is "four billion, eighty-two million, nine hundred eighty-five thousand, five hundred nine".