450531749 has 2 divisors, whose sum is σ = 450531750. Its totient is φ = 450531748.

The previous prime is 450531727. The next prime is 450531793. The reversal of 450531749 is 947135054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248692900 + 201838849 = 15770^2 + 14207^2 .

It is a cyclic number.

It is not a de Polignac number, because 450531749 - 2¹² = 450527653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450531799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225265874 + 225265875.

It is an arithmetic number, because the mean of its divisors is an integer number (225265875).

Almost surely, 2^450531749 is an apocalyptic number.

It is an amenable number.

450531749 is a deficient number, since it is larger than the sum of its proper divisors (1).

450531749 is an equidigital number, since it uses as much as digits as its factorization.

450531749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 450531749 is about 21225.7331793274. The cubic root of 450531749 is about 766.6111537835.

The spelling of 450531749 in words is "four hundred fifty million, five hundred thirty-one thousand, seven hundred forty-nine".