8529275209 has 12 divisors (see below), whose sum is σ = 10685026884. Its totient is φ = 6748437024.

The previous prime is 8529275203. The next prime is 8529275239. The reversal of 8529275209 is 9025729258.

It can be written as a sum of positive squares in 2 ways, for example, as 3712221184 + 4817054025 = 60928^2 + 69405^2 .

It is not a de Polignac number, because 8529275209 - 2¹⁵ = 8529242441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8529275203) 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 11 ways as a sum of consecutive naturals, for example, 6694242 + ... + 6695515.

It is an arithmetic number, because the mean of its divisors is an integer number (890418907).

Almost surely, 2^8529275209 is an apocalyptic number.

It is an amenable number.

8529275209 is a deficient number, since it is larger than the sum of its proper divisors (2155751675).

8529275209 is a wasteful number, since it uses less digits than its factorization.

8529275209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13389784 (or 13389777 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 8529275209 is about 92354.0752159860. The cubic root of 8529275209 is about 2043.1678330444.

The spelling of 8529275209 in words is "eight billion, five hundred twenty-nine million, two hundred seventy-five thousand, two hundred nine".