8094721 has 4 divisors (see below), whose sum is σ = 8113600. Its totient is φ = 8075844.

The previous prime is 8094719. The next prime is 8094731. The reversal of 8094721 is 1274908.

8094721 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8094721 - 2¹ = 8094719 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 (8094731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8781 + ... + 9658.

It is an arithmetic number, because the mean of its divisors is an integer number (2028400).

Almost surely, 2^8094721 is an apocalyptic number.

It is an amenable number.

8094721 is a deficient number, since it is larger than the sum of its proper divisors (18879).

8094721 is a wasteful number, since it uses less digits than its factorization.

8094721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18878.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 8094721 is about 2845.1223172300. The cubic root of 8094721 is about 200.7862466969.

The spelling of 8094721 in words is "eight million, ninety-four thousand, seven hundred twenty-one".