9938393 has 2 divisors, whose sum is σ = 9938394. Its totient is φ = 9938392.

The previous prime is 9938389. The next prime is 9938399. The reversal of 9938393 is 3938399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8690704 + 1247689 = 2948^2 + 1117^2 .

It is a cyclic number.

It is not a de Polignac number, because 9938393 - 2² = 9938389 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9938399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4969196 + 4969197.

It is an arithmetic number, because the mean of its divisors is an integer number (4969197).

Almost surely, 2^9938393 is an apocalyptic number.

It is an amenable number.

9938393 is a deficient number, since it is larger than the sum of its proper divisors (1).

9938393 is an equidigital number, since it uses as much as digits as its factorization.

9938393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 44.

The square root of 9938393 is about 3152.5216890610. The cubic root of 9938393 is about 215.0001297998. Note that the first 3 decimals are identical.

The spelling of 9938393 in words is "nine million, nine hundred thirty-eight thousand, three hundred ninety-three".