449644540 has 24 divisors (see below), whose sum is σ = 967285872. Its totient is φ = 175470720.

The previous prime is 449644523. The next prime is 449644541. The reversal of 449644540 is 45446944.

It is a junction number, because it is equal to n+sod(n) for n = 449644493 and 449644502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449644541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 273354 + ... + 274993.

It is an arithmetic number, because the mean of its divisors is an integer number (40303578).

Almost surely, 2^449644540 is an apocalyptic number.

It is an amenable number.

449644540 is an abundant number, since it is smaller than the sum of its proper divisors (517641332).

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

449644540 is a wasteful number, since it uses less digits than its factorization.

449644540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548397 (or 548395 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The square root of 449644540 is about 21204.8235078720. The cubic root of 449644540 is about 766.1076071311.

The spelling of 449644540 in words is "four hundred forty-nine million, six hundred forty-four thousand, five hundred forty".