404424020402 has 64 divisors (see below), whose sum is σ = 670413004800. Its totient is φ = 182242535040.

The previous prime is 404424020251. The next prime is 404424020419. The reversal of 404424020402 is 204020424404.

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 31 ways as a sum of consecutive naturals, for example, 26392499 + ... + 26407817.

It is an arithmetic number, because the mean of its divisors is an integer number (10475203200).

Almost surely, 2^404424020402 is an apocalyptic number.

404424020402 is a deficient number, since it is larger than the sum of its proper divisors (265988984398).

404424020402 is a wasteful number, since it uses less digits than its factorization.

404424020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15751.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 404424020402 its reverse (204020424404), we get a palindrome (608444444806).

The spelling of 404424020402 in words is "four hundred four billion, four hundred twenty-four million, twenty thousand, four hundred two".