449412561 has 24 divisors (see below), whose sum is σ = 740212200. Its totient is φ = 260292096.

The previous prime is 449412553. The next prime is 449412577. The reversal of 449412561 is 165214944.

449412561 is a `hidden beast` number, since 4 + 4 + 94 + 1 + 2 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 186486336 + 262926225 = 13656^2 + 16215^2 .

It is not a de Polignac number, because 449412561 - 2³ = 449412553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449412581) 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 23 ways as a sum of consecutive naturals, for example, 110986 + ... + 114963.

It is an arithmetic number, because the mean of its divisors is an integer number (30842175).

Almost surely, 2^449412561 is an apocalyptic number.

It is an amenable number.

449412561 is a deficient number, since it is larger than the sum of its proper divisors (290799639).

449412561 is a wasteful number, since it uses less digits than its factorization.

449412561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225985 (or 225982 counting only the distinct ones).

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

The square root of 449412561 is about 21199.3528438960. The cubic root of 449412561 is about 765.9758353036.

The spelling of 449412561 in words is "four hundred forty-nine million, four hundred twelve thousand, five hundred sixty-one".