8729047 has 8 divisors (see below), whose sum is σ = 8981280. Its totient is φ = 8480160.

The previous prime is 8729033. The next prime is 8729051. The reversal of 8729047 is 7409278.

It is a happy number.

8729047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8729047 - 2¹⁹ = 8204759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8728997 and 8729015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8729057) 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, 5022 + ... + 6532.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^8729047 is an apocalyptic number.

8729047 is a deficient number, since it is larger than the sum of its proper divisors (252233).

8729047 is a wasteful number, since it uses less digits than its factorization.

8729047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 8729047 is about 2954.4960653215. The cubic root of 8729047 is about 205.8996510652.

The spelling of 8729047 in words is "eight million, seven hundred twenty-nine thousand, forty-seven".