1166289 has 8 divisors (see below), whose sum is σ = 1591392. Its totient is φ = 759360.

The previous prime is 1166287. The next prime is 1166311. The reversal of 1166289 is 9826611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1166289 - 2¹ = 1166287 is a prime.

1166289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1166287) 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 in 7 ways as a sum of consecutive naturals, for example, 4392 + ... + 4649.

It is an arithmetic number, because the mean of its divisors is an integer number (198924).

2^1166289 is an apocalyptic number.

It is an amenable number.

1166289 is a deficient number, since it is larger than the sum of its proper divisors (425103).

1166289 is an equidigital number, since it uses as much as digits as its factorization.

1166289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9087.

The product of its digits is 5184, while the sum is 33.

The square root of 1166289 is about 1079.9486098885. The cubic root of 1166289 is about 105.2612993137.

The spelling of 1166289 in words is "one million, one hundred sixty-six thousand, two hundred eighty-nine".