9671221 has 8 divisors (see below), whose sum is σ = 11240640. Its totient is φ = 8148768.

The previous prime is 9671197. The next prime is 9671251. The reversal of 9671221 is 1221769.

It is a happy number.

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 9671221 - 2⁷ = 9671093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9671221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9671251) 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 7 ways as a sum of consecutive naturals, for example, 11296 + ... + 12121.

It is an arithmetic number, because the mean of its divisors is an integer number (1405080).

Almost surely, 2^9671221 is an apocalyptic number.

It is an amenable number.

9671221 is a deficient number, since it is larger than the sum of its proper divisors (1569419).

9671221 is a wasteful number, since it uses less digits than its factorization.

9671221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23483.

The product of its digits is 1512, while the sum is 28.

The square root of 9671221 is about 3109.8586784611. The cubic root of 9671221 is about 213.0560000288.

It can be divided in two parts, 96 and 71221, that added together give a palindrome (71317).

The spelling of 9671221 in words is "nine million, six hundred seventy-one thousand, two hundred twenty-one".