9338821 has 2 divisors, whose sum is σ = 9338822. Its totient is φ = 9338820.

The previous prime is 9338809. The next prime is 9338839. The reversal of 9338821 is 1288339.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8473921 + 864900 = 2911^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 9338821 - 2⁹ = 9338309 is a prime.

9338821 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9338881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4669410 + 4669411.

It is an arithmetic number, because the mean of its divisors is an integer number (4669411).

Almost surely, 2^9338821 is an apocalyptic number.

It is an amenable number.

9338821 is a deficient number, since it is larger than the sum of its proper divisors (1).

9338821 is an equidigital number, since it uses as much as digits as its factorization.

9338821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 9338821 is about 3055.9484616073. The cubic root of 9338821 is about 210.5865762134.

The spelling of 9338821 in words is "nine million, three hundred thirty-eight thousand, eight hundred twenty-one".