449854561 has 16 divisors (see below), whose sum is σ = 513841104. Its totient is φ = 390150144.

The previous prime is 449854553. The next prime is 449854567. The reversal of 449854561 is 165458944.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2954961 + 446899600 = 1719^2 + 21140^2 .

It is a cyclic number.

It is not a de Polignac number, because 449854561 - 2³ = 449854553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449854567) 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 15 ways as a sum of consecutive naturals, for example, 160605 + ... + 163381.

It is an arithmetic number, because the mean of its divisors is an integer number (32115069).

Almost surely, 2^449854561 is an apocalyptic number.

It is an amenable number.

449854561 is a deficient number, since it is larger than the sum of its proper divisors (63986543).

449854561 is a wasteful number, since it uses less digits than its factorization.

449854561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540.

The product of its digits is 691200, while the sum is 46.

The square root of 449854561 is about 21209.7751284638. The cubic root of 449854561 is about 766.2268669960.

The spelling of 449854561 in words is "four hundred forty-nine million, eight hundred fifty-four thousand, five hundred sixty-one".