404400424402 has 8 divisors (see below), whose sum is σ = 653262224076. Its totient is φ = 186646349712.

The previous prime is 404400424391. The next prime is 404400424423. The reversal of 404400424402 is 204424004404.

It can be written as a sum of positive squares in 2 ways, for example, as 324089965521 + 80310458881 = 569289^2 + 283391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7776931213 + ... + 7776931264.

Almost surely, 2^404400424402 is an apocalyptic number.

404400424402 is a deficient number, since it is larger than the sum of its proper divisors (248861799674).

404400424402 is a wasteful number, since it uses less digits than its factorization.

404400424402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15553862492.

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

Adding to 404400424402 its reverse (204424004404), we get a palindrome (608824428806).

The spelling of 404400424402 in words is "four hundred four billion, four hundred million, four hundred twenty-four thousand, four hundred two".