404344422 has 48 divisors (see below), whose sum is σ = 936692640. Its totient is φ = 125611776.

The previous prime is 404344411. The next prime is 404344427. The reversal of 404344422 is 224443404.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404344427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25104 + ... + 37932.

It is an arithmetic number, because the mean of its divisors is an integer number (19514430).

Almost surely, 2^404344422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404344422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468346320).

404344422 is an abundant number, since it is smaller than the sum of its proper divisors (532348218).

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

404344422 is a wasteful number, since it uses less digits than its factorization.

404344422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12957 (or 12954 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 404344422 is about 20108.3172344182. The cubic root of 404344422 is about 739.4641982154.

Adding to 404344422 its reverse (224443404), we get a palindrome (628787826).

The spelling of 404344422 in words is "four hundred four million, three hundred forty-four thousand, four hundred twenty-two".