449921737 has 2 divisors, whose sum is σ = 449921738. Its totient is φ = 449921736.

The previous prime is 449921723. The next prime is 449921749. The reversal of 449921737 is 737129944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265396681 + 184525056 = 16291^2 + 13584^2 .

It is a cyclic number.

It is not a de Polignac number, because 449921737 - 2¹¹ = 449919689 is a prime.

It is not a weakly prime, because it can be changed into another prime (449921777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224960868 + 224960869.

It is an arithmetic number, because the mean of its divisors is an integer number (224960869).

Almost surely, 2^449921737 is an apocalyptic number.

It is an amenable number.

449921737 is a deficient number, since it is larger than the sum of its proper divisors (1).

449921737 is an equidigital number, since it uses as much as digits as its factorization.

449921737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 449921737 is about 21211.3586787834. The cubic root of 449921737 is about 766.2650048734.

The spelling of 449921737 in words is "four hundred forty-nine million, nine hundred twenty-one thousand, seven hundred thirty-seven".