8561449 has 4 divisors (see below), whose sum is σ = 9220036. Its totient is φ = 7902864.

The previous prime is 8561447. The next prime is 8561471. The reversal of 8561449 is 9441658.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3861225 + 4700224 = 1965^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 8561449 - 2¹ = 8561447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8561447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329274 + ... + 329299.

It is an arithmetic number, because the mean of its divisors is an integer number (2305009).

Almost surely, 2^8561449 is an apocalyptic number.

It is an amenable number.

8561449 is a deficient number, since it is larger than the sum of its proper divisors (658587).

8561449 is a wasteful number, since it uses less digits than its factorization.

8561449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658586.

The product of its digits is 34560, while the sum is 37.

The square root of 8561449 is about 2925.9953861891. The cubic root of 8561449 is about 204.5733661514.

The spelling of 8561449 in words is "eight million, five hundred sixty-one thousand, four hundred forty-nine".