449521 has 8 divisors (see below), whose sum is σ = 482400. Its totient is φ = 417600.

The previous prime is 449473. The next prime is 449543. The reversal of 449521 is 125944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921 + ... + 1321.

It is an arithmetic number, because the mean of its divisors is an integer number (60300).

2⁴⁴⁹⁵²¹ is an apocalyptic number.

It is an amenable number.

449521 is a deficient number, since it is larger than the sum of its proper divisors (32879).

449521 is a wasteful number, since it uses less digits than its factorization.

449521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 1440, while the sum is 25.

The square root of 449521 is about 670.4632726705. The cubic root of 449521 is about 76.6037437924.

It can be divided in two parts, 4495 and 21, that multiplied together give a triangular number (94395 = T₄₃₄).

The spelling of 449521 in words is "four hundred forty-nine thousand, five hundred twenty-one".