819479222 has 16 divisors (see below), whose sum is σ = 1244166000. Its totient is φ = 404779680.

The previous prime is 819479191. The next prime is 819479249. The reversal of 819479222 is 222974918.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 70697 + ... + 81467.

It is an arithmetic number, because the mean of its divisors is an integer number (77760375).

Almost surely, 2^819479222 is an apocalyptic number.

819479222 is a deficient number, since it is larger than the sum of its proper divisors (424686778).

819479222 is a wasteful number, since it uses less digits than its factorization.

819479222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11231.

The product of its digits is 145152, while the sum is 44.

The square root of 819479222 is about 28626.5475040215. The cubic root of 819479222 is about 935.7919727564.

The spelling of 819479222 in words is "eight hundred nineteen million, four hundred seventy-nine thousand, two hundred twenty-two".