1189289 has 4 divisors (see below), whose sum is σ = 1195524. Its totient is φ = 1183056.

The previous prime is 1189277. The next prime is 1189301. The reversal of 1189289 is 9829811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9829811 = 29 ⋅338959.

It is an interprime number because it is at equal distance from previous prime (1189277) and next prime (1189301).

It can be written as a sum of positive squares in 2 ways, for example, as 779689 + 409600 = 883^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189289 - 2⁸ = 1189033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1189219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822 + ... + 3215.

It is an arithmetic number, because the mean of its divisors is an integer number (298881).

2^1189289 is an apocalyptic number.

It is an amenable number.

1189289 is a deficient number, since it is larger than the sum of its proper divisors (6235).

1189289 is an equidigital number, since it uses as much as digits as its factorization.

1189289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234.

The product of its digits is 10368, while the sum is 38.

The square root of 1189289 is about 1090.5452764558. The cubic root of 1189289 is about 105.9487410881.

The spelling of 1189289 in words is "one million, one hundred eighty-nine thousand, two hundred eighty-nine".