8986221 has 20 divisors (see below), whose sum is σ = 14132800. Its totient is φ = 5674536.

The previous prime is 8986213. The next prime is 8986223. The reversal of 8986221 is 1226898.

8986221 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8986221 - 2³ = 8986213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8986223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1381 + ... + 4458.

It is an arithmetic number, because the mean of its divisors is an integer number (706640).

Almost surely, 2^8986221 is an apocalyptic number.

8986221 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8986221 is a deficient number, since it is larger than the sum of its proper divisors (5146579).

8986221 is a wasteful number, since it uses less digits than its factorization.

8986221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870 (or 5861 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 8986221 is about 2997.7026203411. The cubic root of 8986221 is about 207.9021744742.

The spelling of 8986221 in words is "eight million, nine hundred eighty-six thousand, two hundred twenty-one".