449664732 has 72 divisors (see below), whose sum is σ = 1243831680. Its totient is φ = 135839520.

The previous prime is 449664727. The next prime is 449664751. The reversal of 449664732 is 237466944.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140583 + ... + 143745.

It is an arithmetic number, because the mean of its divisors is an integer number (17275440).

Almost surely, 2^449664732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449664732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621915840).

449664732 is an abundant number, since it is smaller than the sum of its proper divisors (794166948).

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

449664732 is a wasteful number, since it uses less digits than its factorization.

449664732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543 (or 3538 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 449664732 is about 21205.2996206137. The cubic root of 449664732 is about 766.1190747179.

The spelling of 449664732 in words is "four hundred forty-nine million, six hundred sixty-four thousand, seven hundred thirty-two".