9991193 has 4 divisors (see below), whose sum is σ = 10041600. Its totient is φ = 9940788.

The previous prime is 9991187. The next prime is 9991199. The reversal of 9991193 is 3911999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (9991187) and next prime (9991199).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9991193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9991193.

It is not an unprimeable number, because it can be changed into a prime (9991199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24905 + ... + 25302.

It is an arithmetic number, because the mean of its divisors is an integer number (2510400).

Almost surely, 2^9991193 is an apocalyptic number.

It is an amenable number.

9991193 is a deficient number, since it is larger than the sum of its proper divisors (50407).

9991193 is a wasteful number, since it uses less digits than its factorization.

9991193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50406.

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

The square root of 9991193 is about 3160.8848444700. The cubic root of 9991193 is about 215.3802034058.

The spelling of 9991193 in words is "nine million, nine hundred ninety-one thousand, one hundred ninety-three".