449818 has 4 divisors (see below), whose sum is σ = 674730. Its totient is φ = 224908.

The previous prime is 449807. The next prime is 449821. The reversal of 449818 is 818944.

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

It can be written as a sum of positive squares in only one way, i.e., 426409 + 23409 = 653^2 + 153^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112453 + ... + 112456.

2⁴⁴⁹⁸¹⁸ is an apocalyptic number.

449818 is a deficient number, since it is larger than the sum of its proper divisors (224912).

449818 is a wasteful number, since it uses less digits than its factorization.

449818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224911.

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

The square root of 449818 is about 670.6847247403. The cubic root of 449818 is about 76.6206108599.

The spelling of 449818 in words is "four hundred forty-nine thousand, eight hundred eighteen".