8489869 has 4 divisors (see below), whose sum is σ = 8498140. Its totient is φ = 8481600.

The previous prime is 8489867. The next prime is 8489891. The reversal of 8489869 is 9689848.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 927369 + 7562500 = 963^2 + 2750^2 .

It is a cyclic number.

It is not a de Polignac number, because 8489869 - 2¹ = 8489867 is a prime.

It is a super-2 number, since 2×8489869² = 144155751274322, which contains 22 as substring.

It is a Duffinian number.

8489869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8489861) 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, 2334 + ... + 4735.

It is an arithmetic number, because the mean of its divisors is an integer number (2124535).

Almost surely, 2^8489869 is an apocalyptic number.

It is an amenable number.

8489869 is a deficient number, since it is larger than the sum of its proper divisors (8271).

8489869 is a wasteful number, since it uses less digits than its factorization.

8489869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270.

The product of its digits is 995328, while the sum is 52.

The square root of 8489869 is about 2913.7379772382. The cubic root of 8489869 is about 204.0016419835.

The spelling of 8489869 in words is "eight million, four hundred eighty-nine thousand, eight hundred sixty-nine".