8639445 has 8 divisors (see below), whose sum is σ = 13823136. Its totient is φ = 4607696.

The previous prime is 8639443. The next prime is 8639453. The reversal of 8639445 is 5449368.

8639445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8639445 - 2¹ = 8639443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8639441) 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 7 ways as a sum of consecutive naturals, for example, 287967 + ... + 287996.

It is an arithmetic number, because the mean of its divisors is an integer number (1727892).

Almost surely, 2^8639445 is an apocalyptic number.

It is an amenable number.

8639445 is a deficient number, since it is larger than the sum of its proper divisors (5183691).

8639445 is a wasteful number, since it uses less digits than its factorization.

8639445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575971.

The product of its digits is 103680, while the sum is 39.

The square root of 8639445 is about 2939.2932824065. The cubic root of 8639445 is about 205.1927198189.

The spelling of 8639445 in words is "eight million, six hundred thirty-nine thousand, four hundred forty-five".