449181 has 12 divisors (see below), whose sum is σ = 671580. Its totient is φ = 288960.

The previous prime is 449173. The next prime is 449201. The reversal of 449181 is 181944.

It can be written as a sum of positive squares in 2 ways, for example, as 285156 + 164025 = 534^2 + 405^2 .

It is not a de Polignac number, because 449181 - 2³ = 449173 is a prime.

It is a super-2 number, since 2×449181² = 403527141522, which contains 22 as substring.

449181 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 449181.

It is not an unprimeable number, because it can be changed into a prime (449131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 600 + ... + 1121.

It is an arithmetic number, because the mean of its divisors is an integer number (55965).

2⁴⁴⁹¹⁸¹ is an apocalyptic number.

It is an amenable number.

449181 is a deficient number, since it is larger than the sum of its proper divisors (222399).

449181 is a wasteful number, since it uses less digits than its factorization.

449181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1753 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 449181 is about 670.2096686859. The cubic root of 449181 is about 76.5844255683.

It can be divided in two parts, 449 and 181, that added together give a triangular number (630 = T₃₅).

The spelling of 449181 in words is "four hundred forty-nine thousand, one hundred eighty-one".