8539287973 has 4 divisors (see below), whose sum is σ = 8700406668. Its totient is φ = 8378169280.

The previous prime is 8539287937. The next prime is 8539288001. The reversal of 8539287973 is 3797829358.

8539287973 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 5773264324 + 2766023649 = 75982^2 + 52593^2 .

It is a cyclic number.

It is not a de Polignac number, because 8539287973 - 2¹³ = 8539279781 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 (8539287473) 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, 80559268 + ... + 80559373.

It is an arithmetic number, because the mean of its divisors is an integer number (2175101667).

Almost surely, 2^8539287973 is an apocalyptic number.

It is an amenable number.

8539287973 is a deficient number, since it is larger than the sum of its proper divisors (161118695).

8539287973 is a wasteful number, since it uses less digits than its factorization.

8539287973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161118694.

The product of its digits is 22861440, while the sum is 61.

The square root of 8539287973 is about 92408.2678822626. The cubic root of 8539287973 is about 2043.9670317540.

The spelling of 8539287973 in words is "eight billion, five hundred thirty-nine million, two hundred eighty-seven thousand, nine hundred seventy-three".