8539820709 has 16 divisors (see below), whose sum is σ = 13030274688. Its totient is φ = 4873442112.

The previous prime is 8539820699. The next prime is 8539820753. The reversal of 8539820709 is 9070289358.

It is not a de Polignac number, because 8539820709 - 2²⁰ = 8538772133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8539820909) 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 in 15 ways as a sum of consecutive naturals, for example, 252702 + ... + 284495.

It is an arithmetic number, because the mean of its divisors is an integer number (814392168).

Almost surely, 2^8539820709 is an apocalyptic number.

It is an amenable number.

8539820709 is a deficient number, since it is larger than the sum of its proper divisors (4490453979).

8539820709 is a wasteful number, since it uses less digits than its factorization.

8539820709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537964.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 8539820709 is about 92411.1503499442. The cubic root of 8539820709 is about 2044.0095361635.

The spelling of 8539820709 in words is "eight billion, five hundred thirty-nine million, eight hundred twenty thousand, seven hundred nine".