804423221 has 16 divisors (see below), whose sum is σ = 975026304. Its totient is φ = 647875584.

The previous prime is 804423173. The next prime is 804423227. The reversal of 804423221 is 122324408.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804423221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804423227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71261 + ... + 81773.

It is an arithmetic number, because the mean of its divisors is an integer number (60939144).

Almost surely, 2^804423221 is an apocalyptic number.

It is an amenable number.

804423221 is a deficient number, since it is larger than the sum of its proper divisors (170603083).

804423221 is a wasteful number, since it uses less digits than its factorization.

804423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 804423221 is about 28362.3557025858. The cubic root of 804423221 is about 930.0255209399.

Adding to 804423221 its reverse (122324408), we get a palindrome (926747629).

The spelling of 804423221 in words is "eight hundred four million, four hundred twenty-three thousand, two hundred twenty-one".