404204204440 has 32 divisors (see below), whose sum is σ = 909504762480. Its totient is φ = 161673628032.

The previous prime is 404204204423. The next prime is 404204204441. The reversal of 404204204440 is 44402402404.

It is a junction number, because it is equal to n+sod(n) for n = 404204204399 and 404204204408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404204204441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596674 + ... + 1079086.

Almost surely, 2^404204204440 is an apocalyptic number.

404204204440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404204204440 is an abundant number, since it is smaller than the sum of its proper divisors (505300558040).

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

404204204440 is a wasteful number, since it uses less digits than its factorization.

404204204440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503371 (or 503367 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 404204204440 its reverse (44402402404), we get a palindrome (448606606844).

The spelling of 404204204440 in words is "four hundred four billion, two hundred four million, two hundred four thousand, four hundred forty".