2099191 has 2 divisors, whose sum is σ = 2099192. Its totient is φ = 2099190.

The previous prime is 2099179. The next prime is 2099197. The reversal of 2099191 is 1919902.

2099191 is digitally balanced in base 2, 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 2099191 - 2¹¹ = 2097143 is a prime.

It is equal to p₁₅₅₇₄₉ and since 2099191 and 155749 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2099197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049595 + 1049596.

It is an arithmetic number, because the mean of its divisors is an integer number (1049596).

2^2099191 is an apocalyptic number.

2099191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2099191 is an equidigital number, since it uses as much as digits as its factorization.

2099191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 2099191 is about 1448.8585162120. The cubic root of 2099191 is about 128.0414701240.

The spelling of 2099191 in words is "two million, ninety-nine thousand, one hundred ninety-one".