8386221 has 8 divisors (see below), whose sum is σ = 11214720. Its totient is φ = 5574272.

The previous prime is 8386211. The next prime is 8386223. The reversal of 8386221 is 1226838.

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 8386221 - 2¹⁹ = 7861933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8386223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2901 + ... + 5018.

It is an arithmetic number, because the mean of its divisors is an integer number (1401840).

Almost surely, 2^8386221 is an apocalyptic number.

It is an amenable number.

8386221 is a deficient number, since it is larger than the sum of its proper divisors (2828499).

8386221 is a wasteful number, since it uses less digits than its factorization.

8386221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275.

The product of its digits is 4608, while the sum is 30.

The square root of 8386221 is about 2895.8972702774. The cubic root of 8386221 is about 203.1680603306.

The spelling of 8386221 in words is "eight million, three hundred eighty-six thousand, two hundred twenty-one".