8489561 has 4 divisors (see below), whose sum is σ = 8936400. Its totient is φ = 8042724.

The previous prime is 8489543. The next prime is 8489581. The reversal of 8489561 is 1659848.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8489561 - 2¹⁰ = 8488537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8489521) 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, 223391 + ... + 223428.

It is an arithmetic number, because the mean of its divisors is an integer number (2234100).

Almost surely, 2^8489561 is an apocalyptic number.

It is an amenable number.

8489561 is a deficient number, since it is larger than the sum of its proper divisors (446839).

8489561 is a wasteful number, since it uses less digits than its factorization.

8489561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446838.

The product of its digits is 69120, while the sum is 41.

The square root of 8489561 is about 2913.6851236879. The cubic root of 8489561 is about 203.9991749935. Note that the first 3 decimals are identical.

The spelling of 8489561 in words is "eight million, four hundred eighty-nine thousand, five hundred sixty-one".