11187289 has 2 divisors, whose sum is σ = 11187290. Its totient is φ = 11187288.

The previous prime is 11187271. The next prime is 11187313. The reversal of 11187289 is 98278111.

11187289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11108889 + 78400 = 3333^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 11187289 - 2⁷ = 11187161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11187229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5593644 + 5593645.

It is an arithmetic number, because the mean of its divisors is an integer number (5593645).

Almost surely, 2^11187289 is an apocalyptic number.

It is an amenable number.

11187289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11187289 is an equidigital number, since it uses as much as digits as its factorization.

11187289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 37.

The square root of 11187289 is about 3344.7404981553. The cubic root of 11187289 is about 223.6531155717.

It can be divided in two parts, 11187 and 289, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 11187289 in words is "eleven million, one hundred eighty-seven thousand, two hundred eighty-nine".