4085564879 has 6 divisors (see below), whose sum is σ = 4490745000. Its totient is φ = 3714149780.

The previous prime is 4085564849. The next prime is 4085564909. The reversal of 4085564879 is 9784655804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4085564849) and next prime (4085564909).

It is a de Polignac number, because none of the positive numbers 2^k-4085564879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085564809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16882379 + ... + 16882620.

It is an arithmetic number, because the mean of its divisors is an integer number (748457500).

Almost surely, 2^4085564879 is an apocalyptic number.

4085564879 is a deficient number, since it is larger than the sum of its proper divisors (405180121).

4085564879 is a wasteful number, since it uses less digits than its factorization.

4085564879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33765021 (or 33765010 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The square root of 4085564879 is about 63918.4236273080. The cubic root of 4085564879 is about 1598.6401047921.

The spelling of 4085564879 in words is "four billion, eighty-five million, five hundred sixty-four thousand, eight hundred seventy-nine".