450122609 has 2 divisors, whose sum is σ = 450122610. Its totient is φ = 450122608.

The previous prime is 450122591. The next prime is 450122657. The reversal of 450122609 is 906221054.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397603600 + 52519009 = 19940^2 + 7247^2 .

It is a cyclic number.

It is not a de Polignac number, because 450122609 - 2¹⁶ = 450057073 is a prime.

It is a super-2 number, since 2×450122609² = 405220726265933762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (450122009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225061304 + 225061305.

It is an arithmetic number, because the mean of its divisors is an integer number (225061305).

Almost surely, 2^450122609 is an apocalyptic number.

It is an amenable number.

450122609 is a deficient number, since it is larger than the sum of its proper divisors (1).

450122609 is an equidigital number, since it uses as much as digits as its factorization.

450122609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 450122609 is about 21216.0931606175. The cubic root of 450122609 is about 766.3790234315.

The spelling of 450122609 in words is "four hundred fifty million, one hundred twenty-two thousand, six hundred nine".