404404402 has 8 divisors (see below), whose sum is σ = 621402012. Its totient is φ = 197270400.

The previous prime is 404404387. The next prime is 404404411. The reversal of 404404402 is 204404404.

It can be written as a sum of positive squares in 2 ways, for example, as 259177801 + 145226601 = 16099^2 + 12051^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2465799 + ... + 2465962.

Almost surely, 2^404404402 is an apocalyptic number.

404404402 is a deficient number, since it is larger than the sum of its proper divisors (216997610).

404404402 is a wasteful number, since it uses less digits than its factorization.

404404402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4931804.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 404404402 is about 20109.8086017744. The cubic root of 404404402 is about 739.5007601721.

Adding to 404404402 its reverse (204404404), we get a palindrome (608808806).

The spelling of 404404402 in words is "four hundred four million, four hundred four thousand, four hundred two".