449945 has 4 divisors (see below), whose sum is σ = 539940. Its totient is φ = 359952.

The previous prime is 449941. The next prime is 449951. The reversal of 449945 is 549944.

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 123904 + 326041 = 352^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 449945 - 2² = 449941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (449941) 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, 44990 + ... + 44999.

It is an arithmetic number, because the mean of its divisors is an integer number (134985).

2⁴⁴⁹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

449945 is a deficient number, since it is larger than the sum of its proper divisors (89995).

449945 is an equidigital number, since it uses as much as digits as its factorization.

449945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89994.

The product of its digits is 25920, while the sum is 35.

The square root of 449945 is about 670.7793974177. The cubic root of 449945 is about 76.6278211108.

Subtracting 449945 from its reverse (549944), we obtain a palindrome (99999).

It can be divided in two parts, 44 and 9945, that multiplied together give a triangular number (437580 = T₉₃₅).

The spelling of 449945 in words is "four hundred forty-nine thousand, nine hundred forty-five".