450250109 has 2 divisors, whose sum is σ = 450250110. Its totient is φ = 450250108.

The previous prime is 450250081. The next prime is 450250123. The reversal of 450250109 is 901052054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415262884 + 34987225 = 20378^2 + 5915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450250109 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450250609) 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, 225125054 + 225125055.

It is an arithmetic number, because the mean of its divisors is an integer number (225125055).

Almost surely, 2^450250109 is an apocalyptic number.

It is an amenable number.

450250109 is a deficient number, since it is larger than the sum of its proper divisors (1).

450250109 is an equidigital number, since it uses as much as digits as its factorization.

450250109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 450250109 is about 21219.0977423641. The cubic root of 450250109 is about 766.4513771258.

The spelling of 450250109 in words is "four hundred fifty million, two hundred fifty thousand, one hundred nine".