404021442011 has 8 divisors (see below), whose sum is σ = 446060913984. Its totient is φ = 362867011720.

The previous prime is 404021442001. The next prime is 404021442023. The reversal of 404021442011 is 110244120404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404021442011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404021442001) 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 7 ways as a sum of consecutive naturals, for example, 221259461 + ... + 221261286.

It is an arithmetic number, because the mean of its divisors is an integer number (55757614248).

Almost surely, 2^404021442011 is an apocalyptic number.

404021442011 is a deficient number, since it is larger than the sum of its proper divisors (42039471973).

404021442011 is a wasteful number, since it uses less digits than its factorization.

404021442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442520841.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 404021442011 its reverse (110244120404), we get a palindrome (514265562415).

The spelling of 404021442011 in words is "four hundred four billion, twenty-one million, four hundred forty-two thousand, eleven".