8219889 has 6 divisors (see below), whose sum is σ = 11873186. Its totient is φ = 5479920.

The previous prime is 8219881. The next prime is 8219899. The reversal of 8219889 is 9889128.

It can be written as a sum of positive squares in only one way, i.e., 8208225 + 11664 = 2865^2 + 108^2 .

It is not a de Polignac number, because 8219889 - 2³ = 8219881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8219881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 456652 + ... + 456669.

Almost surely, 2^8219889 is an apocalyptic number.

It is an amenable number.

8219889 is a deficient number, since it is larger than the sum of its proper divisors (3653297).

8219889 is a wasteful number, since it uses less digits than its factorization.

8219889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913327 (or 913324 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 8219889 is about 2867.0348794530. The cubic root of 8219889 is about 201.8158714900.

The spelling of 8219889 in words is "eight million, two hundred nineteen thousand, eight hundred eighty-nine".