404404809204 has 24 divisors (see below), whose sum is σ = 1029394060128. Its totient is φ = 122546911840.

The previous prime is 404404809203. The next prime is 404404809223. The reversal of 404404809204 is 402908404404.

It is a super-2 number, since 2×404404809204² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404404809203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531836267 + ... + 1531836530.

It is an arithmetic number, because the mean of its divisors is an integer number (42891419172).

Almost surely, 2^404404809204 is an apocalyptic number.

404404809204 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

404404809204 is an abundant number, since it is smaller than the sum of its proper divisors (624989250924).

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

404404809204 is a wasteful number, since it uses less digits than its factorization.

404404809204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063672815 (or 3063672813 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 39.

The spelling of 404404809204 in words is "four hundred four billion, four hundred four million, eight hundred nine thousand, two hundred four".