8539274509 has 4 divisors (see below), whose sum is σ = 8542520316. Its totient is φ = 8536028704.

The previous prime is 8539274507. The next prime is 8539274531. The reversal of 8539274509 is 9054729358.

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 2663592100 + 5875682409 = 51610^2 + 76653^2 .

It is a cyclic number.

It is not a de Polignac number, because 8539274509 - 2¹ = 8539274507 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 (8539274501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618954 + ... + 1624219.

It is an arithmetic number, because the mean of its divisors is an integer number (2135630079).

Almost surely, 2^8539274509 is an apocalyptic number.

It is an amenable number.

8539274509 is a deficient number, since it is larger than the sum of its proper divisors (3245807).

8539274509 is a wasteful number, since it uses less digits than its factorization.

8539274509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245806.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The square root of 8539274509 is about 92408.1950316096. The cubic root of 8539274509 is about 2043.9659575042.

The spelling of 8539274509 in words is "eight billion, five hundred thirty-nine million, two hundred seventy-four thousand, five hundred nine".