9487221 has 8 divisors (see below), whose sum is σ = 12692064. Its totient is φ = 6303600.

The previous prime is 9487217. The next prime is 9487223. The reversal of 9487221 is 1227849.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9487221 - 2² = 9487217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9487223) 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, 4230 + ... + 6071.

It is an arithmetic number, because the mean of its divisors is an integer number (1586508).

Almost surely, 2^9487221 is an apocalyptic number.

It is an amenable number.

9487221 is a deficient number, since it is larger than the sum of its proper divisors (3204843).

9487221 is a wasteful number, since it uses less digits than its factorization.

9487221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10611.

The product of its digits is 8064, while the sum is 33.

The square root of 9487221 is about 3080.1332763372. The cubic root of 9487221 is about 211.6961724080.

The spelling of 9487221 in words is "nine million, four hundred eighty-seven thousand, two hundred twenty-one".