1196809 has 2 divisors, whose sum is σ = 1196810. Its totient is φ = 1196808.

The previous prime is 1196773. The next prime is 1196813. The reversal of 1196809 is 9086911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 685584 + 511225 = 828^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1196809 - 2¹⁹ = 672521 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1196869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598404 + 598405.

It is an arithmetic number, because the mean of its divisors is an integer number (598405).

2^1196809 is an apocalyptic number.

It is an amenable number.

1196809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196809 is an equidigital number, since it uses as much as digits as its factorization.

1196809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1196809 is about 1093.9876598938. The cubic root of 1196809 is about 106.1715804283.

The spelling of 1196809 in words is "one million, one hundred ninety-six thousand, eight hundred nine".