404342011 has 4 divisors (see below), whose sum is σ = 405243000. Its totient is φ = 403441024.

The previous prime is 404342009. The next prime is 404342017. The reversal of 404342011 is 110243404.

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

It is a cyclic number.

It is not a de Polignac number, because 404342011 - 2¹ = 404342009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404342011.

It is not an unprimeable number, because it can be changed into a prime (404342017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449821 + ... + 450718.

It is an arithmetic number, because the mean of its divisors is an integer number (101310750).

Almost surely, 2^404342011 is an apocalyptic number.

404342011 is a deficient number, since it is larger than the sum of its proper divisors (900989).

404342011 is an equidigital number, since it uses as much as digits as its factorization.

404342011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900988.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 404342011 is about 20108.2572840115. The cubic root of 404342011 is about 739.4627284687.

Adding to 404342011 its reverse (110243404), we get a palindrome (514585415).

The spelling of 404342011 in words is "four hundred four million, three hundred forty-two thousand, eleven".