11166389 has 4 divisors (see below), whose sum is σ = 12025356. Its totient is φ = 10307424.

The previous prime is 11166377. The next prime is 11166403. The reversal of 11166389 is 98366111.

11166389 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 4765489 + 6400900 = 2183^2 + 2530^2 .

It is a cyclic number.

It is not a de Polignac number, because 11166389 - 2⁴ = 11166373 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 (11166329) 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, 429464 + ... + 429489.

It is an arithmetic number, because the mean of its divisors is an integer number (3006339).

Almost surely, 2^11166389 is an apocalyptic number.

It is an amenable number.

11166389 is a deficient number, since it is larger than the sum of its proper divisors (858967).

11166389 is an equidigital number, since it uses as much as digits as its factorization.

11166389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858966.

The product of its digits is 7776, while the sum is 35.

The square root of 11166389 is about 3341.6147294384. The cubic root of 11166389 is about 223.5137531221.

The spelling of 11166389 in words is "eleven million, one hundred sixty-six thousand, three hundred eighty-nine".