449881 has 4 divisors (see below), whose sum is σ = 451764. Its totient is φ = 448000.

The previous prime is 449879. The next prime is 449921. The reversal of 449881 is 188944.

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

It can be written as a sum of positive squares in 2 ways, for example, as 403225 + 46656 = 635^2 + 216^2 .

It is a cyclic number.

It is not a de Polignac number, because 449881 - 2¹ = 449879 is a prime.

It is a super-2 number, since 2×449881² = 404785828322, which contains 22 as substring.

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, 520 + ... + 1081.

It is an arithmetic number, because the mean of its divisors is an integer number (112941).

2⁴⁴⁹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

449881 is a deficient number, since it is larger than the sum of its proper divisors (1883).

449881 is a wasteful number, since it uses less digits than its factorization.

449881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882.

The product of its digits is 9216, while the sum is 34.

The square root of 449881 is about 670.7316900222. The cubic root of 449881 is about 76.6241877681.

The spelling of 449881 in words is "four hundred forty-nine thousand, eight hundred eighty-one".