11227789 has 4 divisors (see below), whose sum is σ = 11234524. Its totient is φ = 11221056.

The previous prime is 11227781. The next prime is 11227807. The reversal of 11227789 is 98772211.

11227789 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98772211 = 523 ⋅188857.

It can be written as a sum of positive squares in 2 ways, for example, as 5062500 + 6165289 = 2250^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 11227789 - 2³ = 11227781 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11227781) 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, 1189 + ... + 4885.

It is an arithmetic number, because the mean of its divisors is an integer number (2808631).

Almost surely, 2^11227789 is an apocalyptic number.

It is an amenable number.

11227789 is a deficient number, since it is larger than the sum of its proper divisors (6735).

11227789 is an equidigital number, since it uses as much as digits as its factorization.

11227789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6734.

The product of its digits is 14112, while the sum is 37.

The square root of 11227789 is about 3350.7893099985. The cubic root of 11227789 is about 223.9226787233.

It can be divided in two parts, 1122 and 7789, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 11227789 in words is "eleven million, two hundred twenty-seven thousand, seven hundred eighty-nine".