1109159 has 2 divisors, whose sum is σ = 1109160. Its totient is φ = 1109158.

The previous prime is 1109123. The next prime is 1109161. The reversal of 1109159 is 9519011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1109159 - 2⁸ = 1108903 is a prime.

It is a Sophie Germain prime.

Together with 1109161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109189) 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, 554579 + 554580.

It is an arithmetic number, because the mean of its divisors is an integer number (554580).

2^1109159 is an apocalyptic number.

1109159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109159 is an equidigital number, since it uses as much as digits as its factorization.

1109159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 26.

The square root of 1109159 is about 1053.1661787201. The cubic root of 1109159 is about 103.5137246769.

It can be divided in two parts, 110 and 9159, that multiplied together give a triangular number (1007490 = T₁₄₁₉).

The spelling of 1109159 in words is "one million, one hundred nine thousand, one hundred fifty-nine".