8709928929 has 27 divisors (see below), whose sum is σ = 13628917497. Its totient is φ = 5357716416.

The previous prime is 8709928907. The next prime is 8709928963. The reversal of 8709928929 is 9298299078.

The square root of 8709928929 is 93327.

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

It can be written as a sum of positive squares in 4 ways, for example, as 6411685329 + 2298243600 = 80073^2 + 47940^2 .

It is not a de Polignac number, because 8709928929 - 2⁹ = 8709928417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8709928729) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3638557 + ... + 3640949.

Almost surely, 2^8709928929 is an apocalyptic number.

8709928929 is the 93327-th square number.

8709928929 is the 46664-th centered octagonal number.

It is an amenable number.

8709928929 is a deficient number, since it is larger than the sum of its proper divisors (4918988568).

8709928929 is an equidigital number, since it uses as much as digits as its factorization.

8709928929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818 (or 2409 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The cubic root of 8709928929 is about 2057.4922298127.

The spelling of 8709928929 in words is "eight billion, seven hundred nine million, nine hundred twenty-eight thousand, nine hundred twenty-nine".