449503812 has 72 divisors (see below), whose sum is σ = 1208136384. Its totient is φ = 140602176.

The previous prime is 449503777. The next prime is 449503819. The reversal of 449503812 is 218305944.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (449503819) 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 23 ways as a sum of consecutive naturals, for example, 38763 + ... + 49005.

It is an arithmetic number, because the mean of its divisors is an integer number (16779672).

Almost surely, 2^449503812 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 449503812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604068192).

449503812 is an abundant number, since it is smaller than the sum of its proper divisors (758632572).

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

449503812 is a wasteful number, since it uses less digits than its factorization.

449503812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10329 (or 10324 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 449503812 is about 21201.5049465834. The cubic root of 449503812 is about 766.0276743314.

The spelling of 449503812 in words is "four hundred forty-nine million, five hundred three thousand, eight hundred twelve".