449905 has 16 divisors (see below), whose sum is σ = 587520. Its totient is φ = 329472.

The previous prime is 449879. The next prime is 449921. The reversal of 449905 is 509944.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 449905 - 2¹³ = 441713 is a prime.

449905 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5656 + ... + 5734.

It is an arithmetic number, because the mean of its divisors is an integer number (36720).

2⁴⁴⁹⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

449905 is a deficient number, since it is larger than the sum of its proper divisors (137615).

449905 is a wasteful number, since it uses less digits than its factorization.

449905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 449905 is about 670.7495806931. The cubic root of 449905 is about 76.6255503120.

The spelling of 449905 in words is "four hundred forty-nine thousand, nine hundred five".