9993911 has 2 divisors, whose sum is σ = 9993912. Its totient is φ = 9993910.

The previous prime is 9993901. The next prime is 9993913. The reversal of 9993911 is 1193999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9993911 - 2¹⁸ = 9731767 is a prime.

It is a Sophie Germain prime.

Together with 9993913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9993913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996955 + 4996956.

It is an arithmetic number, because the mean of its divisors is an integer number (4996956).

Almost surely, 2^9993911 is an apocalyptic number.

9993911 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993911 is an equidigital number, since it uses as much as digits as its factorization.

9993911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19683, while the sum is 41.

The square root of 9993911 is about 3161.3147581347. The cubic root of 9993911 is about 215.3997322821.

The spelling of 9993911 in words is "nine million, nine hundred ninety-three thousand, nine hundred eleven".