8500286809 has 9 divisors (see below), whose sum is σ = 9888839541. Its totient is φ = 7285406940.

The previous prime is 8500286803. The next prime is 8500286813. The reversal of 8500286809 is 9086820058.

It is a happy number.

The square root of 8500286809 is 92197.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 8500286809 - 2¹³ = 8500278617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8500286803) 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 8 ways as a sum of consecutive naturals, for example, 638794 + ... + 651964.

It is an arithmetic number, because the mean of its divisors is an integer number (1098759949).

Almost surely, 2^8500286809 is an apocalyptic number.

8500286809 is the 92197-th square number.

8500286809 is the 46099-th centered octagonal number.

It is an amenable number.

8500286809 is a deficient number, since it is larger than the sum of its proper divisors (1388552732).

8500286809 is an frugal number, since it uses more digits than its factorization.

8500286809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26356 (or 13178 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The cubic root of 8500286809 is about 2040.8505047283.

The spelling of 8500286809 in words is "eight billion, five hundred million, two hundred eighty-six thousand, eight hundred nine".