11588989 has 4 divisors (see below), whose sum is σ = 11695420. Its totient is φ = 11482560.

The previous prime is 11588981. The next prime is 11589001. The reversal of 11588989 is 98988511.

11588989 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 an emirpimes, since its reverse is a distinct semiprime: 98988511 = 73 ⋅1356007.

It can be written as a sum of positive squares in 2 ways, for example, as 2839225 + 8749764 = 1685^2 + 2958^2 .

It is a cyclic number.

It is not a de Polignac number, because 11588989 - 2³ = 11588981 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 (11588981) 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, 53052 + ... + 53269.

It is an arithmetic number, because the mean of its divisors is an integer number (2923855).

Almost surely, 2^11588989 is an apocalyptic number.

It is an amenable number.

11588989 is a deficient number, since it is larger than the sum of its proper divisors (106431).

11588989 is a wasteful number, since it uses less digits than its factorization.

11588989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106430.

The product of its digits is 207360, while the sum is 49.

The square root of 11588989 is about 3404.2604189456. The cubic root of 11588989 is about 226.2985911527.

The spelling of 11588989 in words is "eleven million, five hundred eighty-eight thousand, nine hundred eighty-nine".