11639189 has 2 divisors, whose sum is σ = 11639190. Its totient is φ = 11639188.

The previous prime is 11639183. The next prime is 11639209. The reversal of 11639189 is 98193611.

11639189 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., 11336689 + 302500 = 3367^2 + 550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11639189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11639183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819594 + 5819595.

It is an arithmetic number, because the mean of its divisors is an integer number (5819595).

Almost surely, 2^11639189 is an apocalyptic number.

It is an amenable number.

11639189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11639189 is an equidigital number, since it uses as much as digits as its factorization.

11639189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 38.

The square root of 11639189 is about 3411.6255656212. The cubic root of 11639189 is about 226.6248728691.

The spelling of 11639189 in words is "eleven million, six hundred thirty-nine thousand, one hundred eighty-nine".