8729387 has 8 divisors (see below), whose sum is σ = 9036720. Its totient is φ = 8426880.

The previous prime is 8729333. The next prime is 8729389. The reversal of 8729387 is 7839278.

It is a happy number.

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 8729387 - 2⁶ = 8729323 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8729389) 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 7 ways as a sum of consecutive naturals, for example, 2687 + ... + 4967.

It is an arithmetic number, because the mean of its divisors is an integer number (1129590).

Almost surely, 2^8729387 is an apocalyptic number.

8729387 is a deficient number, since it is larger than the sum of its proper divisors (307333).

8729387 is a wasteful number, since it uses less digits than its factorization.

8729387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413.

The product of its digits is 169344, while the sum is 44.

The square root of 8729387 is about 2954.5536041846. The cubic root of 8729387 is about 205.9023243227.

The spelling of 8729387 in words is "eight million, seven hundred twenty-nine thousand, three hundred eighty-seven".