9793991 has 2 divisors, whose sum is σ = 9793992. Its totient is φ = 9793990.

The previous prime is 9793969. The next prime is 9794003. The reversal of 9793991 is 1993979.

It is a happy number.

9793991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9793991 - 2²² = 5599687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9793951) 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, 4896995 + 4896996.

It is an arithmetic number, because the mean of its divisors is an integer number (4896996).

Almost surely, 2^9793991 is an apocalyptic number.

9793991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9793991 is an equidigital number, since it uses as much as digits as its factorization.

9793991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137781, while the sum is 47.

The square root of 9793991 is about 3129.5352690136. The cubic root of 9793991 is about 213.9537487025.

The spelling of 9793991 in words is "nine million, seven hundred ninety-three thousand, nine hundred ninety-one".