11886889 has 4 divisors (see below), whose sum is σ = 13585024. Its totient is φ = 10188756.

The previous prime is 11886829. The next prime is 11886899. The reversal of 11886889 is 98868811.

11886889 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.

It is a cyclic number.

It is not a de Polignac number, because 11886889 - 2¹³ = 11878697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11886829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849057 + ... + 849070.

It is an arithmetic number, because the mean of its divisors is an integer number (3396256).

Almost surely, 2^11886889 is an apocalyptic number.

It is an amenable number.

11886889 is a deficient number, since it is larger than the sum of its proper divisors (1698135).

11886889 is an equidigital number, since it uses as much as digits as its factorization.

11886889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698134.

The product of its digits is 221184, while the sum is 49.

The square root of 11886889 is about 3447.7367938983. The cubic root of 11886889 is about 228.2212444085.

The spelling of 11886889 in words is "eleven million, eight hundred eighty-six thousand, eight hundred eighty-nine".