450448109 has 2 divisors, whose sum is σ = 450448110. Its totient is φ = 450448108.

The previous prime is 450448087. The next prime is 450448127. The reversal of 450448109 is 901844054.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295943209 + 154504900 = 17203^2 + 12430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450448109 is a prime.

It is a Chen prime.

It is equal to p_23875406 and since 450448109 and 23875406 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450448129) 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, 225224054 + 225224055.

It is an arithmetic number, because the mean of its divisors is an integer number (225224055).

Almost surely, 2^450448109 is an apocalyptic number.

It is an amenable number.

450448109 is a deficient number, since it is larger than the sum of its proper divisors (1).

450448109 is an equidigital number, since it uses as much as digits as its factorization.

450448109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 450448109 is about 21223.7628379135. The cubic root of 450448109 is about 766.5637110855.

The spelling of 450448109 in words is "four hundred fifty million, four hundred forty-eight thousand, one hundred nine".