11589989 has 2 divisors, whose sum is σ = 11589990. Its totient is φ = 11589988.

The previous prime is 11589947. The next prime is 11589997. The reversal of 11589989 is 98998511.

11589989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 3833764 = 2785^2 + 1958^2 .

It is an emirp because it is prime and its reverse (98998511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11589989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11529989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5794994 + 5794995.

It is an arithmetic number, because the mean of its divisors is an integer number (5794995).

Almost surely, 2^11589989 is an apocalyptic number.

It is an amenable number.

11589989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11589989 is an equidigital number, since it uses as much as digits as its factorization.

11589989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 50.

The square root of 11589989 is about 3404.4072905573. The cubic root of 11589989 is about 226.3050999771.

The spelling of 11589989 in words is "eleven million, five hundred eighty-nine thousand, nine hundred eighty-nine".