449987 has 2 divisors, whose sum is σ = 449988. Its totient is φ = 449986.

The previous prime is 449971. The next prime is 449989. The reversal of 449987 is 789944.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 449987 - 2⁴ = 449971 is a prime.

Together with 449989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (449989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224993 + 224994.

It is an arithmetic number, because the mean of its divisors is an integer number (224994).

2⁴⁴⁹⁹⁸⁷ is an apocalyptic number.

449987 is a deficient number, since it is larger than the sum of its proper divisors (1).

449987 is an equidigital number, since it uses as much as digits as its factorization.

449987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 449987 is about 670.8107035521. The cubic root of 449987 is about 76.6302053046.

The spelling of 449987 in words is "four hundred forty-nine thousand, nine hundred eighty-seven".