9886221 has 6 divisors (see below), whose sum is σ = 14280110. Its totient is φ = 6590808.

The previous prime is 9886211. The next prime is 9886223. The reversal of 9886221 is 1226889.

9886221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9696996 + 189225 = 3114^2 + 435^2 .

It is not a de Polignac number, because 9886221 - 2⁶ = 9886157 is a prime.

It is a Duffinian number.

9886221 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9886223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 549226 + ... + 549243.

Almost surely, 2^9886221 is an apocalyptic number.

It is an amenable number.

9886221 is a deficient number, since it is larger than the sum of its proper divisors (4393889).

9886221 is a wasteful number, since it uses less digits than its factorization.

9886221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098475 (or 1098472 counting only the distinct ones).

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

The square root of 9886221 is about 3144.2361552530. The cubic root of 9886221 is about 214.6232522293.

The spelling of 9886221 in words is "nine million, eight hundred eighty-six thousand, two hundred twenty-one".