404222550 has 48 divisors (see below), whose sum is σ = 1005752592. Its totient is φ = 107440000.

The previous prime is 404222509. The next prime is 404222569. The reversal of 404222550 is 55222404.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 404222550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43300 + ... + 51800.

It is an arithmetic number, because the mean of its divisors is an integer number (20953179).

Almost surely, 2^404222550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404222550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502876296).

404222550 is an abundant number, since it is smaller than the sum of its proper divisors (601530042).

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

404222550 is a wasteful number, since it uses less digits than its factorization.

404222550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8833 (or 8828 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 404222550 is about 20105.2866182007. The cubic root of 404222550 is about 739.3898976673.

Adding to 404222550 its reverse (55222404), we get a palindrome (459444954).

The spelling of 404222550 in words is "four hundred four million, two hundred twenty-two thousand, five hundred fifty".