449338920 has 64 divisors (see below), whose sum is σ = 1361949120. Its totient is φ = 118585344.

The previous prime is 449338913. The next prime is 449338937. The reversal of 449338920 is 29833944.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7662 + ... + 30941.

It is an arithmetic number, because the mean of its divisors is an integer number (21280455).

Almost surely, 2^449338920 is an apocalyptic number.

449338920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449338920 is an abundant number, since it is smaller than the sum of its proper divisors (912610200).

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

449338920 is a wasteful number, since it uses less digits than its factorization.

449338920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38714 (or 38710 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 449338920 is about 21197.6159036812. The cubic root of 449338920 is about 765.9339952716.

The spelling of 449338920 in words is "four hundred forty-nine million, three hundred thirty-eight thousand, nine hundred twenty".