8729023 has 4 divisors (see below), whose sum is σ = 8941968. Its totient is φ = 8516080.

The previous prime is 8728987. The next prime is 8729033. The reversal of 8729023 is 3209278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8729023 - 2²¹ = 6631871 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106411 + ... + 106492.

It is an arithmetic number, because the mean of its divisors is an integer number (2235492).

Almost surely, 2^8729023 is an apocalyptic number.

8729023 is a deficient number, since it is larger than the sum of its proper divisors (212945).

8729023 is a wasteful number, since it uses less digits than its factorization.

8729023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212944.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 8729023 is about 2954.4920037123. The cubic root of 8729023 is about 205.8994623620.

The spelling of 8729023 in words is "eight million, seven hundred twenty-nine thousand, twenty-three".