9393921 has 16 divisors (see below), whose sum is σ = 14155200. Its totient is φ = 6155424.

The previous prime is 9393871. The next prime is 9393929. The reversal of 9393921 is 1293939.

It is not a de Polignac number, because 9393921 - 2¹¹ = 9391873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9393929) 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 15 ways as a sum of consecutive naturals, for example, 1356 + ... + 4541.

It is an arithmetic number, because the mean of its divisors is an integer number (884700).

Almost surely, 2^9393921 is an apocalyptic number.

It is an amenable number.

9393921 is a deficient number, since it is larger than the sum of its proper divisors (4761279).

9393921 is a wasteful number, since it uses less digits than its factorization.

9393921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5965 (or 5959 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 9393921 is about 3064.9504074291. The cubic root of 9393921 is about 210.9999251289. Note that the first 4 decimals are identical.

The spelling of 9393921 in words is "nine million, three hundred ninety-three thousand, nine hundred twenty-one".