404314040021 has 16 divisors (see below), whose sum is σ = 420516144000. Its totient is φ = 388267672128.

The previous prime is 404314039993. The next prime is 404314040033. The reversal of 404314040021 is 120040413404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 404314040021 - 2¹⁸ = 404313777877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404314040051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4477880 + ... + 4567278.

It is an arithmetic number, because the mean of its divisors is an integer number (26282259000).

Almost surely, 2^404314040021 is an apocalyptic number.

It is an amenable number.

404314040021 is a deficient number, since it is larger than the sum of its proper divisors (16202103979).

404314040021 is a wasteful number, since it uses less digits than its factorization.

404314040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90268.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 404314040021 its reverse (120040413404), we get a palindrome (524354453425).

The spelling of 404314040021 in words is "four hundred four billion, three hundred fourteen million, forty thousand, twenty-one".