8729013 has 4 divisors (see below), whose sum is σ = 11638688. Its totient is φ = 5819340.

The previous prime is 8728987. The next prime is 8729033. The reversal of 8729013 is 3109278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8729013 - 2⁸ = 8728757 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 (8729033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454833 + ... + 1454838.

It is an arithmetic number, because the mean of its divisors is an integer number (2909672).

Almost surely, 2^8729013 is an apocalyptic number.

It is an amenable number.

8729013 is a deficient number, since it is larger than the sum of its proper divisors (2909675).

8729013 is a wasteful number, since it uses less digits than its factorization.

8729013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909674.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 8729013 is about 2954.4903113735. The cubic root of 8729013 is about 205.8993837356.

The spelling of 8729013 in words is "eight million, seven hundred twenty-nine thousand, thirteen".