450116609 has 2 divisors, whose sum is σ = 450116610. Its totient is φ = 450116608.

The previous prime is 450116591. The next prime is 450116657. The reversal of 450116609 is 906611054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284428225 + 165688384 = 16865^2 + 12872^2 .

It is a cyclic number.

It is not a de Polignac number, because 450116609 - 2²⁴ = 433339393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (450116659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225058304 + 225058305.

It is an arithmetic number, because the mean of its divisors is an integer number (225058305).

Almost surely, 2^450116609 is an apocalyptic number.

It is an amenable number.

450116609 is a deficient number, since it is larger than the sum of its proper divisors (1).

450116609 is an equidigital number, since it uses as much as digits as its factorization.

450116609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 450116609 is about 21215.9517580522. The cubic root of 450116609 is about 766.3756182152.

The spelling of 450116609 in words is "four hundred fifty million, one hundred sixteen thousand, six hundred nine".