8112729 has 8 divisors (see below), whose sum is σ = 10896480. Its totient is φ = 5368736.

The previous prime is 8112707. The next prime is 8112737. The reversal of 8112729 is 9272118.

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

It is a cyclic number.

It is not a de Polignac number, because 8112729 - 2⁸ = 8112473 is a prime.

8112729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8112696 and 8112705.

It is not an unprimeable number, because it can be changed into a prime (8112749) 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, 9459 + ... + 10280.

It is an arithmetic number, because the mean of its divisors is an integer number (1362060).

Almost surely, 2^8112729 is an apocalyptic number.

It is an amenable number.

8112729 is a deficient number, since it is larger than the sum of its proper divisors (2783751).

8112729 is a wasteful number, since it uses less digits than its factorization.

8112729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19879.

The product of its digits is 2016, while the sum is 30.

The square root of 8112729 is about 2848.2852736339. The cubic root of 8112729 is about 200.9350301144.

The spelling of 8112729 in words is "eight million, one hundred twelve thousand, seven hundred twenty-nine".