449919 has 6 divisors (see below), whose sum is σ = 649896. Its totient is φ = 299940.

The previous prime is 449879. The next prime is 449921. The reversal of 449919 is 919944.

It is not a de Polignac number, because 449919 - 2⁸ = 449663 is a prime.

It is a super-2 number, since 2×449919² = 404854213122, which contains 22 as substring.

449919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24987 + ... + 25004.

It is an arithmetic number, because the mean of its divisors is an integer number (108316).

2⁴⁴⁹⁹¹⁹ is an apocalyptic number.

449919 is a deficient number, since it is larger than the sum of its proper divisors (199977).

449919 is a wasteful number, since it uses less digits than its factorization.

449919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49997 (or 49994 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 449919 is about 670.7600166975. The cubic root of 449919 is about 76.6263451069.

The spelling of 449919 in words is "four hundred forty-nine thousand, nine hundred nineteen".