1119809 has 2 divisors, whose sum is σ = 1119810. Its totient is φ = 1119808.

The previous prime is 1119799. The next prime is 1119817. The reversal of 1119809 is 9089111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 908209 + 211600 = 953^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1119809 - 2⁴ = 1119793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1119109) 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, 559904 + 559905.

It is an arithmetic number, because the mean of its divisors is an integer number (559905).

2^1119809 is an apocalyptic number.

It is an amenable number.

1119809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119809 is an equidigital number, since it uses as much as digits as its factorization.

1119809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 1119809 is about 1058.2102815603. The cubic root of 1119809 is about 103.8439783301.

The spelling of 1119809 in words is "one million, one hundred nineteen thousand, eight hundred nine".