404434421420 has 48 divisors (see below), whose sum is σ = 910881145440. Its totient is φ = 150367666176.

The previous prime is 404434421351. The next prime is 404434421431. The reversal of 404434421420 is 24124434404.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10020437 + ... + 10060716.

It is an arithmetic number, because the mean of its divisors is an integer number (18976690530).

Almost surely, 2^404434421420 is an apocalyptic number.

It is an amenable number.

404434421420 is an abundant number, since it is smaller than the sum of its proper divisors (506446724020).

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

404434421420 is a wasteful number, since it uses less digits than its factorization.

404434421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20081234 (or 20081232 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 404434421420 its reverse (24124434404), we get a palindrome (428558855824).

The spelling of 404434421420 in words is "four hundred four billion, four hundred thirty-four million, four hundred twenty-one thousand, four hundred twenty".