8217489 has 16 divisors (see below), whose sum is σ = 12579840. Its totient is φ = 4674000.

The previous prime is 8217479. The next prime is 8217523. The reversal of 8217489 is 9847128.

It is not a de Polignac number, because 8217489 - 2⁹ = 8216977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8217439) 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, 4492 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^8217489 is an apocalyptic number.

It is an amenable number.

8217489 is a deficient number, since it is larger than the sum of its proper divisors (4362351).

8217489 is a wasteful number, since it uses less digits than its factorization.

With its successor (8217490) it forms an eRAP, since the sums of their prime factors are consecutive (1820 and 1821).

8217489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820.

The product of its digits is 32256, while the sum is 39.

The square root of 8217489 is about 2866.6162980071. The cubic root of 8217489 is about 201.7962278655.

It can be divided in two parts, 82 and 17489, that added together give a palindrome (17571).

The spelling of 8217489 in words is "eight million, two hundred seventeen thousand, four hundred eighty-nine".