449000009 has 2 divisors, whose sum is σ = 449000010. Its totient is φ = 449000008.

The previous prime is 448999987. The next prime is 449000021. The reversal of 449000009 is 900000944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372490000 + 76510009 = 19300^2 + 8747^2 .

It is a cyclic number.

It is not a de Polignac number, because 449000009 - 2²⁴ = 432222793 is a prime.

It is not a weakly prime, because it can be changed into another prime (449000029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224500004 + 224500005.

It is an arithmetic number, because the mean of its divisors is an integer number (224500005).

Almost surely, 2^449000009 is an apocalyptic number.

It is an amenable number.

449000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

449000009 is an equidigital number, since it uses as much as digits as its factorization.

449000009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 449000009 is about 21189.6203127852. The cubic root of 449000009 is about 765.7413799018.

The spelling of 449000009 in words is "four hundred forty-nine million, nine", and thus it is an aban number.