404011 has 2 divisors, whose sum is σ = 404012. Its totient is φ = 404010.

The previous prime is 404009. The next prime is 404017. The reversal of 404011 is 110404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404011 - 2¹ = 404009 is a prime.

Together with 404009, it forms a pair of twin primes.

404011 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (404017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202005 + 202006.

It is an arithmetic number, because the mean of its divisors is an integer number (202006).

2⁴⁰⁴⁰¹¹ is an apocalyptic number.

404011 is a deficient number, since it is larger than the sum of its proper divisors (1).

404011 is an equidigital number, since it uses as much as digits as its factorization.

404011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 404011 is about 635.6185963296. The cubic root of 404011 is about 73.9260888513.

Adding to 404011 its reverse (110404), we get a palindrome (514415).

The spelling of 404011 in words is "four hundred four thousand, eleven", and thus it is an iban number.