449986 has 4 divisors (see below), whose sum is σ = 674982. Its totient is φ = 224992.

The previous prime is 449971. The next prime is 449987. The reversal of 449986 is 689944.

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., 269361 + 180625 = 519^2 + 425^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449987) by changing a digit.

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, 112495 + ... + 112498.

2⁴⁴⁹⁹⁸⁶ is an apocalyptic number.

449986 is a deficient number, since it is larger than the sum of its proper divisors (224996).

449986 is a wasteful number, since it uses less digits than its factorization.

449986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224995.

The product of its digits is 62208, while the sum is 40.

The square root of 449986 is about 670.8099581849. The cubic root of 449986 is about 76.6301485399.

The spelling of 449986 in words is "four hundred forty-nine thousand, nine hundred eighty-six".