8405222 has 16 divisors (see below), whose sum is σ = 14522112. Its totient is φ = 3573960.

The previous prime is 8405219. The next prime is 8405227. The reversal of 8405222 is 2225048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8405227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458 + ... + 4125.

It is an arithmetic number, because the mean of its divisors is an integer number (907632).

Almost surely, 2^8405222 is an apocalyptic number.

8405222 is a deficient number, since it is larger than the sum of its proper divisors (6116890).

8405222 is a wasteful number, since it uses less digits than its factorization.

8405222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 8405222 is about 2899.1760898573. The cubic root of 8405222 is about 203.3213866193.

The spelling of 8405222 in words is "eight million, four hundred five thousand, two hundred twenty-two".