404442442 has 16 divisors (see below), whose sum is σ = 635522112. Its totient is φ = 192670720.

The previous prime is 404442421. The next prime is 404442469. The reversal of 404442442 is 244244404.

It is a self number, because there is not a number n which added to its sum of digits gives 404442442.

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 7 ways as a sum of consecutive naturals, for example, 5284 + ... + 28927.

It is an arithmetic number, because the mean of its divisors is an integer number (39720132).

Almost surely, 2^404442442 is an apocalyptic number.

404442442 is a deficient number, since it is larger than the sum of its proper divisors (231079670).

404442442 is a wasteful number, since it uses less digits than its factorization.

404442442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34493.

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

The square root of 404442442 is about 20110.7543866460. The cubic root of 404442442 is about 739.5239463086.

Adding to 404442442 its reverse (244244404), we get a palindrome (648686846).

The spelling of 404442442 in words is "four hundred four million, four hundred forty-two thousand, four hundred forty-two".