11841889 has 4 divisors (see below), whose sum is σ = 12250260. Its totient is φ = 11433520.

The previous prime is 11841881. The next prime is 11841917. The reversal of 11841889 is 98814811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3478225 + 8363664 = 1865^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 11841889 - 2³ = 11841881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11841881) 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, 204142 + ... + 204199.

It is an arithmetic number, because the mean of its divisors is an integer number (3062565).

Almost surely, 2^11841889 is an apocalyptic number.

It is an amenable number.

11841889 is a deficient number, since it is larger than the sum of its proper divisors (408371).

11841889 is an equidigital number, since it uses as much as digits as its factorization.

11841889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408370.

The product of its digits is 18432, while the sum is 40.

The square root of 11841889 is about 3441.2045856066. The cubic root of 11841889 is about 227.9328890919.

The spelling of 11841889 in words is "eleven million, eight hundred forty-one thousand, eight hundred eighty-nine".