4085538847 has 4 divisors (see below), whose sum is σ = 4399811080. Its totient is φ = 3771266616.

The previous prime is 4085538817. The next prime is 4085538851. The reversal of 4085538847 is 7488355804.

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

It is not a de Polignac number, because 4085538847 - 2²⁷ = 3951321119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4085538794 and 4085538803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085538817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157136097 + ... + 157136122.

It is an arithmetic number, because the mean of its divisors is an integer number (1099952770).

Almost surely, 2^4085538847 is an apocalyptic number.

4085538847 is a deficient number, since it is larger than the sum of its proper divisors (314272233).

4085538847 is a wasteful number, since it uses less digits than its factorization.

4085538847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314272232.

The product of its (nonzero) digits is 4300800, while the sum is 52.

The square root of 4085538847 is about 63918.2199924247. The cubic root of 4085538847 is about 1598.6367094323.

The spelling of 4085538847 in words is "four billion, eighty-five million, five hundred thirty-eight thousand, eight hundred forty-seven".