404240412011 has 4 divisors (see below), whose sum is σ = 404324616024. Its totient is φ = 404156208000.

The previous prime is 404240411969. The next prime is 404240412029. The reversal of 404240412011 is 110214042404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404240412011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404240412031) 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, 42094805 + ... + 42104406.

It is an arithmetic number, because the mean of its divisors is an integer number (101081154006).

Almost surely, 2^404240412011 is an apocalyptic number.

404240412011 is a deficient number, since it is larger than the sum of its proper divisors (84204013).

404240412011 is an equidigital number, since it uses as much as digits as its factorization.

404240412011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84204012.

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

Adding to 404240412011 its reverse (110214042404), we get a palindrome (514454454415).

The spelling of 404240412011 in words is "four hundred four billion, two hundred forty million, four hundred twelve thousand, eleven".