8220489 has 8 divisors (see below), whose sum is σ = 11063520. Its totient is φ = 5428896.

The previous prime is 8220481. The next prime is 8220493. The reversal of 8220489 is 9840228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8220489 - 2³ = 8220481 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12484 + ... + 13125.

It is an arithmetic number, because the mean of its divisors is an integer number (1382940).

Almost surely, 2^8220489 is an apocalyptic number.

It is an amenable number.

8220489 is a deficient number, since it is larger than the sum of its proper divisors (2843031).

8220489 is a wasteful number, since it uses less digits than its factorization.

8220489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25719.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 8220489 is about 2867.1395152660. The cubic root of 8220489 is about 201.8207817987.

The spelling of 8220489 in words is "eight million, two hundred twenty thousand, four hundred eighty-nine".