448459909 has 2 divisors, whose sum is σ = 448459910. Its totient is φ = 448459908.

The previous prime is 448459889. The next prime is 448459931. The reversal of 448459909 is 909954844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261727684 + 186732225 = 16178^2 + 13665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448459909 is a prime.

It is a super-2 number, since 2×448459909² = 402232579960576562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448459969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224229954 + 224229955.

It is an arithmetic number, because the mean of its divisors is an integer number (224229955).

Almost surely, 2^448459909 is an apocalyptic number.

It is an amenable number.

448459909 is a deficient number, since it is larger than the sum of its proper divisors (1).

448459909 is an equidigital number, since it uses as much as digits as its factorization.

448459909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 448459909 is about 21176.8720305904. The cubic root of 448459909 is about 765.4342211403.

The spelling of 448459909 in words is "four hundred forty-eight million, four hundred fifty-nine thousand, nine hundred nine".