1117289 has 4 divisors (see below), whose sum is σ = 1147524. Its totient is φ = 1087056.

The previous prime is 1117279. The next prime is 1117301. The reversal of 1117289 is 9827111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 672400 + 444889 = 820^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117289 - 2⁴ = 1117273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1117279) 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, 15062 + ... + 15135.

It is an arithmetic number, because the mean of its divisors is an integer number (286881).

2^1117289 is an apocalyptic number.

It is an amenable number.

1117289 is a deficient number, since it is larger than the sum of its proper divisors (30235).

1117289 is an equidigital number, since it uses as much as digits as its factorization.

1117289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30234.

The product of its digits is 1008, while the sum is 29.

The square root of 1117289 is about 1057.0189213065. The cubic root of 1117289 is about 103.7660235570.

The spelling of 1117289 in words is "one million, one hundred seventeen thousand, two hundred eighty-nine".