1095209 has 2 divisors, whose sum is σ = 1095210. Its totient is φ = 1095208.

The previous prime is 1095173. The next prime is 1095221. The reversal of 1095209 is 9025901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912025 + 183184 = 955^2 + 428^2 .

It is an emirp because it is prime and its reverse (9025901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1095209 - 2²⁰ = 46633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1095229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547604 + 547605.

It is an arithmetic number, because the mean of its divisors is an integer number (547605).

2^1095209 is an apocalyptic number.

It is an amenable number.

1095209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1095209 is an equidigital number, since it uses as much as digits as its factorization.

1095209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1095209 is about 1046.5223361209. The cubic root of 1095209 is about 103.0779251321.

The spelling of 1095209 in words is "one million, ninety-five thousand, two hundred nine".