404004400442 has 16 divisors (see below), whose sum is σ = 610509238080. Its totient is φ = 200502001728.

The previous prime is 404004400369. The next prime is 404004400447. The reversal of 404004400442 is 244004400404.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (404004400447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1034978 + ... + 1370834.

It is an arithmetic number, because the mean of its divisors is an integer number (38156827380).

Almost surely, 2^404004400442 is an apocalyptic number.

404004400442 is a deficient number, since it is larger than the sum of its proper divisors (206504837638).

404004400442 is a wasteful number, since it uses less digits than its factorization.

404004400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340325.

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

Adding to 404004400442 its reverse (244004400404), we get a palindrome (648008800846).

The spelling of 404004400442 in words is "four hundred four billion, four million, four hundred thousand, four hundred forty-two".