404000449 has 2 divisors, whose sum is σ = 404000450. Its totient is φ = 404000448.

The previous prime is 404000423. The next prime is 404000453. The reversal of 404000449 is 944000404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401000625 + 2999824 = 20025^2 + 1732^2 .

It is a cyclic number.

It is not a de Polignac number, because 404000449 - 2⁵ = 404000417 is a prime.

It is not a weakly prime, because it can be changed into another prime (404001449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202000224 + 202000225.

It is an arithmetic number, because the mean of its divisors is an integer number (202000225).

Almost surely, 2^404000449 is an apocalyptic number.

It is an amenable number.

404000449 is a deficient number, since it is larger than the sum of its proper divisors (1).

404000449 is an equidigital number, since it uses as much as digits as its factorization.

404000449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 404000449 is about 20099.7624115311. The cubic root of 404000449 is about 739.2544530369.

The spelling of 404000449 in words is "four hundred four million, four hundred forty-nine", and thus it is an aban number.