404011316209 has 2 divisors, whose sum is σ = 404011316210. Its totient is φ = 404011316208.

The previous prime is 404011316207. The next prime is 404011316237. The reversal of 404011316209 is 902613110404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226412285584 + 177599030625 = 475828^2 + 421425^2 .

It is a cyclic number.

It is not a de Polignac number, because 404011316209 - 2¹ = 404011316207 is a prime.

It is a super-2 number, since 2×404011316209² (a number of 24 digits) contains 22 as substring.

Together with 404011316207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (404011316207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202005658104 + 202005658105.

It is an arithmetic number, because the mean of its divisors is an integer number (202005658105).

Almost surely, 2^404011316209 is an apocalyptic number.

It is an amenable number.

404011316209 is a deficient number, since it is larger than the sum of its proper divisors (1).

404011316209 is an equidigital number, since it uses as much as digits as its factorization.

404011316209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 404011316209 in words is "four hundred four billion, eleven million, three hundred sixteen thousand, two hundred nine".