11327989 has 4 divisors (see below), whose sum is σ = 11693440. Its totient is φ = 10962540.

The previous prime is 11327977. The next prime is 11328017. The reversal of 11327989 is 98972311.

11327989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98972311 = 19 ⋅5209069.

It is a cyclic number.

It is not a de Polignac number, because 11327989 - 2¹⁷ = 11196917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11327909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182679 + ... + 182740.

It is an arithmetic number, because the mean of its divisors is an integer number (2923360).

Almost surely, 2^11327989 is an apocalyptic number.

It is an amenable number.

11327989 is a deficient number, since it is larger than the sum of its proper divisors (365451).

11327989 is an equidigital number, since it uses as much as digits as its factorization.

11327989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365450.

The product of its digits is 27216, while the sum is 40.

The square root of 11327989 is about 3365.7078007456. The cubic root of 11327989 is about 224.5868236254.

The spelling of 11327989 in words is "eleven million, three hundred twenty-seven thousand, nine hundred eighty-nine".