449891 has 4 divisors (see below), whose sum is σ = 484512. Its totient is φ = 415272.

The previous prime is 449879. The next prime is 449921. The reversal of 449891 is 198944.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 449891 - 2¹⁰ = 448867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17291 + ... + 17316.

It is an arithmetic number, because the mean of its divisors is an integer number (121128).

2⁴⁴⁹⁸⁹¹ is an apocalyptic number.

449891 is a deficient number, since it is larger than the sum of its proper divisors (34621).

449891 is a wasteful number, since it uses less digits than its factorization.

449891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34620.

The product of its digits is 10368, while the sum is 35.

The square root of 449891 is about 670.7391445264. The cubic root of 449891 is about 76.6247555006.

The spelling of 449891 in words is "four hundred forty-nine thousand, eight hundred ninety-one".