449847561 has 16 divisors (see below), whose sum is σ = 604517760. Its totient is φ = 297548160.

The previous prime is 449847533. The next prime is 449847571. The reversal of 449847561 is 165748944.

It is not a de Polignac number, because 449847561 - 2⁹ = 449847049 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 449847561.

It is not an unprimeable number, because it can be changed into a prime (449847521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220695 + ... + 222723.

It is an arithmetic number, because the mean of its divisors is an integer number (37782360).

Almost surely, 2^449847561 is an apocalyptic number.

It is an amenable number.

449847561 is a deficient number, since it is larger than the sum of its proper divisors (154670199).

449847561 is a wasteful number, since it uses less digits than its factorization.

449847561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576.

The product of its digits is 967680, while the sum is 48.

The square root of 449847561 is about 21209.6101095706. The cubic root of 449847561 is about 766.2228926627. Note that the first 3 decimals are identical.

The spelling of 449847561 in words is "four hundred forty-nine million, eight hundred forty-seven thousand, five hundred sixty-one".