1086191 has 2 divisors, whose sum is σ = 1086192. Its totient is φ = 1086190.

The previous prime is 1086179. The next prime is 1086193. The reversal of 1086191 is 1916801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1086191 - 2¹⁴ = 1069807 is a prime.

It is a Sophie Germain prime.

Together with 1086193, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1086191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1086193) 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, 543095 + 543096.

It is an arithmetic number, because the mean of its divisors is an integer number (543096).

2^1086191 is an apocalyptic number.

1086191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1086191 is an equidigital number, since it uses as much as digits as its factorization.

1086191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1086191 is about 1042.2048742930. The cubic root of 1086191 is about 102.7942289603.

The spelling of 1086191 in words is "one million, eighty-six thousand, one hundred ninety-one".