449085409 has 2 divisors, whose sum is σ = 449085410. Its totient is φ = 449085408.

The previous prime is 449085401. The next prime is 449085431. The reversal of 449085409 is 904580944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425514384 + 23571025 = 20628^2 + 4855^2 .

It is a cyclic number.

It is not a de Polignac number, because 449085409 - 2³ = 449085401 is a prime.

It is a super-3 number, since 3×449085409³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (449085401) 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 as a sum of consecutive naturals, namely, 224542704 + 224542705.

It is an arithmetic number, because the mean of its divisors is an integer number (224542705).

Almost surely, 2^449085409 is an apocalyptic number.

It is an amenable number.

449085409 is a deficient number, since it is larger than the sum of its proper divisors (1).

449085409 is an equidigital number, since it uses as much as digits as its factorization.

449085409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 449085409 is about 21191.6353545450. The cubic root of 449085409 is about 765.7899249404.

The spelling of 449085409 in words is "four hundred forty-nine million, eighty-five thousand, four hundred nine".