11640489 has 12 divisors (see below), whose sum is σ = 18054864. Its totient is φ = 6651624.

The previous prime is 11640481. The next prime is 11640491. The reversal of 11640489 is 98404611.

It is not a de Polignac number, because 11640489 - 2³ = 11640481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11640481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39447 + ... + 39740.

It is an arithmetic number, because the mean of its divisors is an integer number (1504572).

Almost surely, 2^11640489 is an apocalyptic number.

It is an amenable number.

11640489 is a deficient number, since it is larger than the sum of its proper divisors (6414375).

11640489 is an equidigital number, since it uses as much as digits as its factorization.

11640489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79204 (or 79197 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 11640489 is about 3411.8160853129. The cubic root of 11640489 is about 226.6333099222.

The spelling of 11640489 in words is "eleven million, six hundred forty thousand, four hundred eighty-nine".