450791669 has 4 divisors (see below), whose sum is σ = 477308844. Its totient is φ = 424274496.

The previous prime is 450791641. The next prime is 450791681. The reversal of 450791669 is 966197054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 405498769 + 45292900 = 20137^2 + 6730^2 .

It is a cyclic number.

It is not a de Polignac number, because 450791669 - 2⁸ = 450791413 is a prime.

It is a super-2 number, since 2×450791669² = 406426257679611122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450791629) 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 in 3 ways as a sum of consecutive naturals, for example, 13258562 + ... + 13258595.

It is an arithmetic number, because the mean of its divisors is an integer number (119327211).

Almost surely, 2^450791669 is an apocalyptic number.

It is an amenable number.

450791669 is a deficient number, since it is larger than the sum of its proper divisors (26517175).

450791669 is a wasteful number, since it uses less digits than its factorization.

450791669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26517174.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 450791669 is about 21231.8550531978. The cubic root of 450791669 is about 766.7585494372.

The spelling of 450791669 in words is "four hundred fifty million, seven hundred ninety-one thousand, six hundred sixty-nine".