9949221 has 12 divisors (see below), whose sum is σ = 14533740. Its totient is φ = 6557760.

The previous prime is 9949169. The next prime is 9949231. The reversal of 9949221 is 1229499.

It can be written as a sum of positive squares in 2 ways, for example, as 6320196 + 3629025 = 2514^2 + 1905^2 .

It is not a de Polignac number, because 9949221 - 2⁹ = 9948709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949231) 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 11 ways as a sum of consecutive naturals, for example, 5410 + ... + 7011.

It is an arithmetic number, because the mean of its divisors is an integer number (1211145).

Almost surely, 2^9949221 is an apocalyptic number.

It is an amenable number.

9949221 is a deficient number, since it is larger than the sum of its proper divisors (4584519).

9949221 is a wasteful number, since it uses less digits than its factorization.

9949221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12516 (or 12513 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 9949221 is about 3154.2385768993. The cubic root of 9949221 is about 215.0781832117.

The spelling of 9949221 in words is "nine million, nine hundred forty-nine thousand, two hundred twenty-one".