11228489 has 4 divisors (see below), whose sum is σ = 11363856. Its totient is φ = 11093124.

The previous prime is 11228447. The next prime is 11228509. The reversal of 11228489 is 98482211.

11228489 is digitally balanced in base 2 and base 3, because in such bases 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 11228489 - 2⁸ = 11228233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11228089) 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, 67559 + ... + 67724.

It is an arithmetic number, because the mean of its divisors is an integer number (2840964).

Almost surely, 2^11228489 is an apocalyptic number.

It is an amenable number.

11228489 is a deficient number, since it is larger than the sum of its proper divisors (135367).

11228489 is an equidigital number, since it uses as much as digits as its factorization.

11228489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135366.

The product of its digits is 9216, while the sum is 35.

The square root of 11228489 is about 3350.8937613717. The cubic root of 11228489 is about 223.9273321363.

The spelling of 11228489 in words is "eleven million, two hundred twenty-eight thousand, four hundred eighty-nine".