449989849 has 2 divisors, whose sum is σ = 449989850. Its totient is φ = 449989848.

The previous prime is 449989763. The next prime is 449989853. The reversal of 449989849 is 948989944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350887824 + 99102025 = 18732^2 + 9955^2 .

It is a cyclic number.

It is not a de Polignac number, because 449989849 - 2¹⁹ = 449465561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (449989879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224994924 + 224994925.

It is an arithmetic number, because the mean of its divisors is an integer number (224994925).

Almost surely, 2^449989849 is an apocalyptic number.

It is an amenable number.

449989849 is a deficient number, since it is larger than the sum of its proper divisors (1).

449989849 is an equidigital number, since it uses as much as digits as its factorization.

449989849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26873856, while the sum is 64.

The square root of 449989849 is about 21212.9641728826. The cubic root of 449989849 is about 766.3036702709.

The spelling of 449989849 in words is "four hundred forty-nine million, nine hundred eighty-nine thousand, eight hundred forty-nine".