449085569 has 2 divisors, whose sum is σ = 449085570. Its totient is φ = 449085568.

The previous prime is 449085467. The next prime is 449085607. The reversal of 449085569 is 965580944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420783169 + 28302400 = 20513^2 + 5320^2 .

It is a cyclic number.

It is not a de Polignac number, because 449085569 - 2²⁰ = 448036993 is a prime.

It is a super-2 number, since 2×449085569² = 403355696568107522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (449085869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224542784 + 224542785.

It is an arithmetic number, because the mean of its divisors is an integer number (224542785).

Almost surely, 2^449085569 is an apocalyptic number.

It is an amenable number.

449085569 is a deficient number, since it is larger than the sum of its proper divisors (1).

449085569 is an equidigital number, since it uses as much as digits as its factorization.

449085569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 449085569 is about 21191.6391296190. The cubic root of 449085569 is about 765.7900158855.

The spelling of 449085569 in words is "four hundred forty-nine million, eighty-five thousand, five hundred sixty-nine".