11609289 has 6 divisors (see below), whose sum is σ = 16768986. Its totient is φ = 7739520.

The previous prime is 11609203. The next prime is 11609303. The reversal of 11609289 is 98290611.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 4875264 = 2595^2 + 2208^2 .

It is not a de Polignac number, because 11609289 - 2⁸ = 11609033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11609189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644952 + ... + 644969.

It is an arithmetic number, because the mean of its divisors is an integer number (2794831).

Almost surely, 2^11609289 is an apocalyptic number.

It is an amenable number.

11609289 is a deficient number, since it is larger than the sum of its proper divisors (5159697).

11609289 is a wasteful number, since it uses less digits than its factorization.

11609289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289927 (or 1289924 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 11609289 is about 3407.2406724504. The cubic root of 11609289 is about 226.4306470122.

The spelling of 11609289 in words is "eleven million, six hundred nine thousand, two hundred eighty-nine".