8639226 has 12 divisors (see below), whose sum is σ = 18718362. Its totient is φ = 2879736.

The previous prime is 8639219. The next prime is 8639227. The reversal of 8639226 is 6229368.

It can be written as a sum of positive squares in only one way, i.e., 7568001 + 1071225 = 2751^2 + 1035^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8639227) 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 5 ways as a sum of consecutive naturals, for example, 239961 + ... + 239996.

Almost surely, 2^8639226 is an apocalyptic number.

8639226 is an abundant number, since it is smaller than the sum of its proper divisors (10079136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8639226 is a wasteful number, since it uses less digits than its factorization.

8639226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479965 (or 479962 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 8639226 is about 2939.2560283174. The cubic root of 8639226 is about 205.1909860044.

The spelling of 8639226 in words is "eight million, six hundred thirty-nine thousand, two hundred twenty-six".