1166089 has 2 divisors, whose sum is σ = 1166090. Its totient is φ = 1166088.

The previous prime is 1166083. The next prime is 1166093. The reversal of 1166089 is 9806611.

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., 1071225 + 94864 = 1035^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166089 - 2⁵ = 1166057 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1166089.

It is not a weakly prime, because it can be changed into another prime (1166083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583044 + 583045.

It is an arithmetic number, because the mean of its divisors is an integer number (583045).

2^1166089 is an apocalyptic number.

It is an amenable number.

1166089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166089 is an equidigital number, since it uses as much as digits as its factorization.

1166089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1166089 is about 1079.8560089197. The cubic root of 1166089 is about 105.2552820906.

The spelling of 1166089 in words is "one million, one hundred sixty-six thousand, eighty-nine".