986221 has 4 divisors (see below), whose sum is σ = 1044252. Its totient is φ = 928192.

The previous prime is 986213. The next prime is 986239. The reversal of 986221 is 122689.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 837225 + 148996 = 915^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 986221 - 2³ = 986213 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 986221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28990 + ... + 29023.

It is an arithmetic number, because the mean of its divisors is an integer number (261063).

2⁹⁸⁶²²¹ is an apocalyptic number.

It is an amenable number.

986221 is a deficient number, since it is larger than the sum of its proper divisors (58031).

986221 is a wasteful number, since it uses less digits than its factorization.

986221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58030.

The product of its digits is 1728, while the sum is 28.

The square root of 986221 is about 993.0866024673. The cubic root of 986221 is about 99.5385741365.

The spelling of 986221 in words is "nine hundred eighty-six thousand, two hundred twenty-one".