404404422 has 32 divisors (see below), whose sum is σ = 829699200. Its totient is φ = 131335680.

The previous prime is 404404411. The next prime is 404404433. The reversal of 404404422 is 224404404.

It is an interprime number because it is at equal distance from previous prime (404404411) and next prime (404404433).

It is a junction number, because it is equal to n+sod(n) for n = 404404392 and 404404401.

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 15 ways as a sum of consecutive naturals, for example, 114097 + ... + 117587.

It is an arithmetic number, because the mean of its divisors is an integer number (25928100).

Almost surely, 2^404404422 is an apocalyptic number.

404404422 is an abundant number, since it is smaller than the sum of its proper divisors (425294778).

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

404404422 is a wasteful number, since it uses less digits than its factorization.

404404422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988.

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 404404422 is about 20109.8090990442. The cubic root of 404404422 is about 739.5007723629.

Adding to 404404422 its reverse (224404404), we get a palindrome (628808826).

The spelling of 404404422 in words is "four hundred four million, four hundred four thousand, four hundred twenty-two".