449664 has 32 divisors (see below), whose sum is σ = 1195440. Its totient is φ = 149760.

The previous prime is 449663. The next prime is 449671. The reversal of 449664 is 466944.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (449663) 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, 202 + ... + 969.

2⁴⁴⁹⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

449664 is an abundant number, since it is smaller than the sum of its proper divisors (745776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449664 is a wasteful number, since it uses less digits than its factorization.

449664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1176 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 449664 is about 670.5699068703. The cubic root of 449664 is about 76.6118659001.

It can be divided in two parts, 4496 and 64, that added together give a triangular number (4560 = T₉₅).

The spelling of 449664 in words is "four hundred forty-nine thousand, six hundred sixty-four".