2168289 has 12 divisors (see below), whose sum is σ = 3248336. Its totient is φ = 1445364.

The previous prime is 2168273. The next prime is 2168291. The reversal of 2168289 is 9828612.

It is not a de Polignac number, because 2168289 - 2⁴ = 2168273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4219 + ... + 4704.

2^2168289 is an apocalyptic number.

It is an amenable number.

2168289 is a deficient number, since it is larger than the sum of its proper divisors (1080047).

2168289 is an frugal number, since it uses more digits than its factorization.

2168289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8938 (or 8926 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2168289 is about 1472.5111205013. The cubic root of 2168289 is about 129.4312232003.

The spelling of 2168289 in words is "two million, one hundred sixty-eight thousand, two hundred eighty-nine".