8044721 has 4 divisors (see below), whose sum is σ = 8054772. Its totient is φ = 8034672.

The previous prime is 8044703. The next prime is 8044747. The reversal of 8044721 is 1274408.

8044721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3045025 + 4999696 = 1745^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 8044721 - 2¹⁰ = 8043697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8044021) 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, 3710 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (2013693).

Almost surely, 2^8044721 is an apocalyptic number.

It is an amenable number.

8044721 is a deficient number, since it is larger than the sum of its proper divisors (10051).

8044721 is an equidigital number, since it uses as much as digits as its factorization.

8044721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 8044721 is about 2836.3217377442. The cubic root of 8044721 is about 200.3719827154.

The spelling of 8044721 in words is "eight million, forty-four thousand, seven hundred twenty-one".