449281304649 has 48 divisors (see below), whose sum is σ = 678349086480. Its totient is φ = 286176307200.

The previous prime is 449281304639. The next prime is 449281304651. The reversal of 449281304649 is 946403182944.

449281304649 is a `hidden beast` number, since 4 + 49 + 2 + 8 + 130 + 464 + 9 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1142102025 + 448139202624 = 33795^2 + 669432^2 .

It is not a de Polignac number, because 449281304649 - 2⁹ = 449281304137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449281304595 and 449281304604.

It is not an unprimeable number, because it can be changed into a prime (449281304639) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69405277 + ... + 69411749.

It is an arithmetic number, because the mean of its divisors is an integer number (14132272635).

Almost surely, 2^449281304649 is an apocalyptic number.

It is an amenable number.

449281304649 is a deficient number, since it is larger than the sum of its proper divisors (229067781831).

449281304649 is a wasteful number, since it uses less digits than its factorization.

449281304649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9242 (or 9239 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 449281304649 in words is "four hundred forty-nine billion, two hundred eighty-one million, three hundred four thousand, six hundred forty-nine".