404004222 has 24 divisors (see below), whose sum is σ = 878341464. Its totient is φ = 134206704.

The previous prime is 404004217. The next prime is 404004233. The reversal of 404004222 is 222400404.

404004222 is a `hidden beast` number, since 40 + 400 + 4 + 222 = 666.

It is a super-2 number, since 2×404004222² = 326438822787650568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 404004195 and 404004204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33028 + ... + 43575.

It is an arithmetic number, because the mean of its divisors is an integer number (36597561).

Almost surely, 2^404004222 is an apocalyptic number.

404004222 is an abundant number, since it is smaller than the sum of its proper divisors (474337242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404004222 is a wasteful number, since it uses less digits than its factorization.

404004222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76904 (or 76901 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 404004222 is about 20099.8562681428. The cubic root of 404004222 is about 739.2567543531.

Adding to 404004222 its reverse (222400404), we get a palindrome (626404626).

The spelling of 404004222 in words is "four hundred four million, four thousand, two hundred twenty-two".