404311222 has 16 divisors (see below), whose sum is σ = 729584640. Its totient is φ = 164156328.

The previous prime is 404311217. The next prime is 404311307. The reversal of 404311222 is 222113404.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 404311222.

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, 759718 + ... + 760249.

It is an arithmetic number, because the mean of its divisors is an integer number (45599040).

Almost surely, 2^404311222 is an apocalyptic number.

404311222 is a deficient number, since it is larger than the sum of its proper divisors (325273418).

404311222 is a wasteful number, since it uses less digits than its factorization.

404311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519995.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 404311222 is about 20107.4916884230. The cubic root of 404311222 is about 739.4439589656.

Adding to 404311222 its reverse (222113404), we get a palindrome (626424626).

The spelling of 404311222 in words is "four hundred four million, three hundred eleven thousand, two hundred twenty-two".