404023304420 has 24 divisors (see below), whose sum is σ = 875818261248. Its totient is φ = 156396117600.

The previous prime is 404023304413. The next prime is 404023304423. The reversal of 404023304420 is 24403320404.

It is a self number, because there is not a number n which added to its sum of digits gives 404023304420.

It is not an unprimeable number, because it can be changed into a prime (404023304423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325824626 + ... + 325825865.

It is an arithmetic number, because the mean of its divisors is an integer number (36492427552).

Almost surely, 2^404023304420 is an apocalyptic number.

It is an amenable number.

404023304420 is an abundant number, since it is smaller than the sum of its proper divisors (471794956828).

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

404023304420 is a wasteful number, since it uses less digits than its factorization.

404023304420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651650531 (or 651650529 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 404023304420 its reverse (24403320404), we get a palindrome (428426624824).

The spelling of 404023304420 in words is "four hundred four billion, twenty-three million, three hundred four thousand, four hundred twenty".