404020444424 has 8 divisors (see below), whose sum is σ = 757538333310. Its totient is φ = 202010222208.

The previous prime is 404020444403. The next prime is 404020444433. The reversal of 404020444424 is 424444020404.

It can be written as a sum of positive squares in only one way, i.e., 277604641924 + 126415802500 = 526882^2 + 355550^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25251277769 + ... + 25251277784.

Almost surely, 2^404020444424 is an apocalyptic number.

It is an amenable number.

404020444424 is a deficient number, since it is larger than the sum of its proper divisors (353517888886).

404020444424 is a wasteful number, since it uses less digits than its factorization.

404020444424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50502555559 (or 50502555555 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 404020444424 its reverse (424444020404), we get a palindrome (828464464828).

The spelling of 404020444424 in words is "four hundred four billion, twenty million, four hundred forty-four thousand, four hundred twenty-four".