4084845209 has 4 divisors (see below), whose sum is σ = 4085462580. Its totient is φ = 4084227840.

The previous prime is 4084845151. The next prime is 4084845227. The reversal of 4084845209 is 9025484804.

4084845209 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2077536400 + 2007308809 = 45580^2 + 44803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4084845209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4084845209.

It is not an unprimeable number, because it can be changed into a prime (4084845229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298652 + ... + 312029.

It is an arithmetic number, because the mean of its divisors is an integer number (1021365645).

Almost surely, 2^4084845209 is an apocalyptic number.

It is an amenable number.

4084845209 is a deficient number, since it is larger than the sum of its proper divisors (617371).

4084845209 is an equidigital number, since it uses as much as digits as its factorization.

4084845209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617370.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 4084845209 is about 63912.7937818400. The cubic root of 4084845209 is about 1598.5462327558.

The spelling of 4084845209 in words is "four billion, eighty-four million, eight hundred forty-five thousand, two hundred nine".