9998393 has 2 divisors, whose sum is σ = 9998394. Its totient is φ = 9998392.

The previous prime is 9998381. The next prime is 9998413. The reversal of 9998393 is 3938999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6512704 + 3485689 = 2552^2 + 1867^2 .

It is an emirp because it is prime and its reverse (3938999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9998393 - 2⁴ = 9998377 is a prime.

It is not a weakly prime, because it can be changed into another prime (9998323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999196 + 4999197.

It is an arithmetic number, because the mean of its divisors is an integer number (4999197).

Almost surely, 2^9998393 is an apocalyptic number.

It is an amenable number.

9998393 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998393 is an equidigital number, since it uses as much as digits as its factorization.

9998393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 50.

The square root of 9998393 is about 3162.0235609495. The cubic root of 9998393 is about 215.4319277965.

The spelling of 9998393 in words is "nine million, nine hundred ninety-eight thousand, three hundred ninety-three".