8529728709 has 8 divisors (see below), whose sum is σ = 11739841792. Its totient is φ = 5503050720.

The previous prime is 8529728689. The next prime is 8529728741. The reversal of 8529728709 is 9078279258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8529728709 - 2⁸ = 8529728453 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 (8529728749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45858664 + ... + 45858849.

It is an arithmetic number, because the mean of its divisors is an integer number (1467480224).

Almost surely, 2^8529728709 is an apocalyptic number.

It is an amenable number.

8529728709 is a deficient number, since it is larger than the sum of its proper divisors (3210113083).

8529728709 is a wasteful number, since it uses less digits than its factorization.

8529728709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91717547.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The square root of 8529728709 is about 92356.5304079793. The cubic root of 8529728709 is about 2043.2040440224.

The spelling of 8529728709 in words is "eight billion, five hundred twenty-nine million, seven hundred twenty-eight thousand, seven hundred nine".