449689 has 2 divisors, whose sum is σ = 449690. Its totient is φ = 449688.

The previous prime is 449681. The next prime is 449693. The reversal of 449689 is 986944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350464 + 99225 = 592^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 449689 - 2³ = 449681 is a prime.

It is not a weakly prime, because it can be changed into another prime (449681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224844 + 224845.

It is an arithmetic number, because the mean of its divisors is an integer number (224845).

2⁴⁴⁹⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

449689 is a deficient number, since it is larger than the sum of its proper divisors (1).

449689 is an equidigital number, since it uses as much as digits as its factorization.

449689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 449689 is about 670.5885474715. The cubic root of 449689 is about 76.6132856722.

The spelling of 449689 in words is "four hundred forty-nine thousand, six hundred eighty-nine".