9320921 has 2 divisors, whose sum is σ = 9320922. Its totient is φ = 9320920.

The previous prime is 9320891. The next prime is 9320939. The reversal of 9320921 is 1290239.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5175625 + 4145296 = 2275^2 + 2036^2 .

It is a cyclic number.

It is not a de Polignac number, because 9320921 - 2¹⁰ = 9319897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9320321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4660460 + 4660461.

It is an arithmetic number, because the mean of its divisors is an integer number (4660461).

Almost surely, 2^9320921 is an apocalyptic number.

It is an amenable number.

9320921 is a deficient number, since it is larger than the sum of its proper divisors (1).

9320921 is an equidigital number, since it uses as much as digits as its factorization.

9320921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 9320921 is about 3053.0183425587. The cubic root of 9320921 is about 210.4519442774.

The spelling of 9320921 in words is "nine million, three hundred twenty thousand, nine hundred twenty-one".