8729891695 has 24 divisors (see below), whose sum is σ = 12234853008. Its totient is φ = 5962320000.

The previous prime is 8729891683. The next prime is 8729891699. The reversal of 8729891695 is 5961989278.

8729891695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8729891695 - 2⁷ = 8729891567 is a prime.

It is a super-2 number, since 2×8729891695² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8729891699) 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 23 ways as a sum of consecutive naturals, for example, 9486 + ... + 132475.

It is an arithmetic number, because the mean of its divisors is an integer number (509785542).

Almost surely, 2^8729891695 is an apocalyptic number.

8729891695 is a deficient number, since it is larger than the sum of its proper divisors (3504961313).

8729891695 is a wasteful number, since it uses less digits than its factorization.

8729891695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142231 (or 142224 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 64.

The square root of 8729891695 is about 93433.8894352579. The cubic root of 8729891695 is about 2059.0629237040.

The spelling of 8729891695 in words is "eight billion, seven hundred twenty-nine million, eight hundred ninety-one thousand, six hundred ninety-five".