404422440444 has 72 divisors (see below), whose sum is σ = 1121387183280. Its totient is φ = 121875148800.

The previous prime is 404422440439. The next prime is 404422440449. The reversal of 404422440444 is 444044224404.

404422440444 is a `hidden beast` number, since 404 + 4 + 2 + 244 + 0 + 4 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (404422440439) and next prime (404422440449).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 404422440399 and 404422440408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404422440449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2749509 + ... + 2892860.

It is an arithmetic number, because the mean of its divisors is an integer number (15574821990).

Almost surely, 2^404422440444 is an apocalyptic number.

404422440444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

404422440444 is an abundant number, since it is smaller than the sum of its proper divisors (716964742836).

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

404422440444 is a wasteful number, since it uses less digits than its factorization.

404422440444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642571 (or 5642566 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 36.

Adding to 404422440444 its reverse (444044224404), we get a palindrome (848466664848).

The spelling of 404422440444 in words is "four hundred four billion, four hundred twenty-two million, four hundred forty thousand, four hundred forty-four".