404442011 has 8 divisors (see below), whose sum is σ = 406604880. Its totient is φ = 402285312.

The previous prime is 404441981. The next prime is 404442013. The reversal of 404442011 is 110244404.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 404442011 - 2¹⁰ = 404440987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404442013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184520 + ... + 186698.

It is an arithmetic number, because the mean of its divisors is an integer number (50825610).

Almost surely, 2^404442011 is an apocalyptic number.

404442011 is a deficient number, since it is larger than the sum of its proper divisors (2162869).

404442011 is a wasteful number, since it uses less digits than its factorization.

404442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 404442011 is about 20110.7436709834. The cubic root of 404442011 is about 739.5236836136.

Adding to 404442011 its reverse (110244404), we get a palindrome (514686415).

The spelling of 404442011 in words is "four hundred four million, four hundred forty-two thousand, eleven".