449805 has 16 divisors (see below), whose sum is σ = 728064. Its totient is φ = 237120.

The previous prime is 449797. The next prime is 449807. The reversal of 449805 is 508944.

It is not a de Polignac number, because 449805 - 2³ = 449797 is a prime.

It is a Curzon number.

449805 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449807) 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 in 15 ways as a sum of consecutive naturals, for example, 2260 + ... + 2450.

It is an arithmetic number, because the mean of its divisors is an integer number (45504).

2⁴⁴⁹⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

449805 is a deficient number, since it is larger than the sum of its proper divisors (278259).

449805 is a wasteful number, since it uses less digits than its factorization.

449805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 449805 is about 670.6750330823. The cubic root of 449805 is about 76.6198727261.

The spelling of 449805 in words is "four hundred forty-nine thousand, eight hundred five".