8868729 has 8 divisors (see below), whose sum is σ = 12019072. Its totient is φ = 5815440.

The previous prime is 8868721. The next prime is 8868733. The reversal of 8868729 is 9278688.

It is a happy number.

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

It is not a de Polignac number, because 8868729 - 2³ = 8868721 is a prime.

It is a Duffinian number.

It is a Curzon number.

8868729 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8868721) 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 7 ways as a sum of consecutive naturals, for example, 24049 + ... + 24414.

It is an arithmetic number, because the mean of its divisors is an integer number (1502384).

Almost surely, 2^8868729 is an apocalyptic number.

It is an amenable number.

8868729 is a deficient number, since it is larger than the sum of its proper divisors (3150343).

8868729 is a wasteful number, since it uses less digits than its factorization.

8868729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48527.

The product of its digits is 387072, while the sum is 48.

The square root of 8868729 is about 2978.0411347058. The cubic root of 8868729 is about 206.9921115340.

The spelling of 8868729 in words is "eight million, eight hundred sixty-eight thousand, seven hundred twenty-nine".