99996191 has 2 divisors, whose sum is σ = 99996192. Its totient is φ = 99996190.

The previous prime is 99996181. The next prime is 99996229. The reversal of 99996191 is 19169999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99996191 - 2²² = 95801887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99996121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49998095 + 49998096.

It is an arithmetic number, because the mean of its divisors is an integer number (49998096).

Almost surely, 2^99996191 is an apocalyptic number.

99996191 is a deficient number, since it is larger than the sum of its proper divisors (1).

99996191 is an equidigital number, since it uses as much as digits as its factorization.

99996191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 354294, while the sum is 53.

The square root of 99996191 is about 9999.8095481864. The cubic root of 99996191 is about 464.1529900158.

The spelling of 99996191 in words is "ninety-nine million, nine hundred ninety-six thousand, one hundred ninety-one".