11788487 has 4 divisors (see below), whose sum is σ = 11795976. Its totient is φ = 11781000.

The previous prime is 11788477. The next prime is 11788523. The reversal of 11788487 is 78488711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11788487 - 2⁶ = 11788423 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 (11788477) 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 3 ways as a sum of consecutive naturals, for example, 368 + ... + 4869.

It is an arithmetic number, because the mean of its divisors is an integer number (2948994).

Almost surely, 2^11788487 is an apocalyptic number.

11788487 is a deficient number, since it is larger than the sum of its proper divisors (7489).

11788487 is an equidigital number, since it uses as much as digits as its factorization.

11788487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7488.

The product of its digits is 100352, while the sum is 44.

The square root of 11788487 is about 3433.4366165695. The cubic root of 11788487 is about 227.5897452146.

The spelling of 11788487 in words is "eleven million, seven hundred eighty-eight thousand, four hundred eighty-seven".