449668413 has 6 divisors (see below), whose sum is σ = 649521054. Its totient is φ = 299778936.

The previous prime is 449668409. The next prime is 449668433. The reversal of 449668413 is 314866944.

It can be written as a sum of positive squares in only one way, i.e., 259145604 + 190522809 = 16098^2 + 13803^2 .

It is not a de Polignac number, because 449668413 - 2² = 449668409 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449668433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24981570 + ... + 24981587.

It is an arithmetic number, because the mean of its divisors is an integer number (108253509).

Almost surely, 2^449668413 is an apocalyptic number.

It is an amenable number.

449668413 is a deficient number, since it is larger than the sum of its proper divisors (199852641).

449668413 is a wasteful number, since it uses less digits than its factorization.

449668413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49963163 (or 49963160 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 449668413 is about 21205.3864147768. The cubic root of 449668413 is about 766.1211652210.

The spelling of 449668413 in words is "four hundred forty-nine million, six hundred sixty-eight thousand, four hundred thirteen".