450010109 has 2 divisors, whose sum is σ = 450010110. Its totient is φ = 450010108.

The previous prime is 450010091. The next prime is 450010129. The reversal of 450010109 is 901010054.

Together with previous prime (450010091) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (450010129) can be obtained adding 450010109 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449016100 + 994009 = 21190^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 450010109 - 2²⁰ = 448961533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450010129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225005054 + 225005055.

It is an arithmetic number, because the mean of its divisors is an integer number (225005055).

Almost surely, 2^450010109 is an apocalyptic number.

It is an amenable number.

450010109 is a deficient number, since it is larger than the sum of its proper divisors (1).

450010109 is an equidigital number, since it uses as much as digits as its factorization.

450010109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 450010109 is about 21213.4417056733. The cubic root of 450010109 is about 766.3151705891.

The spelling of 450010109 in words is "four hundred fifty million, ten thousand, one hundred nine".