8729086816 has 24 divisors (see below), whose sum is σ = 17476671240. Its totient is φ = 4290567168.

The previous prime is 8729086813. The next prime is 8729086823. The reversal of 8729086816 is 6186809278.

It is a super-4 number, since 4×8729086816⁴ (a number of 41 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8729086811) 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, 2309841 + ... + 2313616.

It is an arithmetic number, because the mean of its divisors is an integer number (728194635).

Almost surely, 2^8729086816 is an apocalyptic number.

It is an amenable number.

8729086816 is an abundant number, since it is smaller than the sum of its proper divisors (8747584424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8729086816 is a wasteful number, since it uses less digits than its factorization.

8729086816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623526 (or 4623518 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The square root of 8729086816 is about 93429.5821247211. The cubic root of 8729086816 is about 2058.9996412296. Note that the first 3 decimals are identical.

The spelling of 8729086816 in words is "eight billion, seven hundred twenty-nine million, eighty-six thousand, eight hundred sixteen".