8289861 has 4 divisors (see below), whose sum is σ = 11053152. Its totient is φ = 5526572.

The previous prime is 8289857. The next prime is 8289877. The reversal of 8289861 is 1689828.

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 8289861 - 2² = 8289857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8289881) 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, 1381641 + ... + 1381646.

It is an arithmetic number, because the mean of its divisors is an integer number (2763288).

Almost surely, 2^8289861 is an apocalyptic number.

It is an amenable number.

8289861 is a deficient number, since it is larger than the sum of its proper divisors (2763291).

8289861 is a wasteful number, since it uses less digits than its factorization.

8289861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763290.

The product of its digits is 55296, while the sum is 42.

The square root of 8289861 is about 2879.2118713287. The cubic root of 8289861 is about 202.3869083509.

The spelling of 8289861 in words is "eight million, two hundred eighty-nine thousand, eight hundred sixty-one".