404411112421 has 4 divisors (see below), whose sum is σ = 405052018144. Its totient is φ = 403770206700.

The previous prime is 404411112419. The next prime is 404411112461. The reversal of 404411112421 is 124211114404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404411112421 - 2¹ = 404411112419 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 (404411112461) 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 3 ways as a sum of consecutive naturals, for example, 320451915 + ... + 320453176.

It is an arithmetic number, because the mean of its divisors is an integer number (101263004536).

Almost surely, 2^404411112421 is an apocalyptic number.

It is an amenable number.

404411112421 is a deficient number, since it is larger than the sum of its proper divisors (640905723).

404411112421 is an equidigital number, since it uses as much as digits as its factorization.

404411112421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640905722.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 404411112421 its reverse (124211114404), we get a palindrome (528622226825).

The spelling of 404411112421 in words is "four hundred four billion, four hundred eleven million, one hundred twelve thousand, four hundred twenty-one".