11122789 has 4 divisors (see below), whose sum is σ = 11279520. Its totient is φ = 10966060.

The previous prime is 11122763. The next prime is 11122799. The reversal of 11122789 is 98722111.

11122789 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 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 11122789 - 2¹¹ = 11120741 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11122789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122729) 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, 78259 + ... + 78400.

It is an arithmetic number, because the mean of its divisors is an integer number (2819880).

Almost surely, 2^11122789 is an apocalyptic number.

It is an amenable number.

11122789 is a deficient number, since it is larger than the sum of its proper divisors (156731).

11122789 is an equidigital number, since it uses as much as digits as its factorization.

11122789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156730.

The product of its digits is 2016, while the sum is 31.

The square root of 11122789 is about 3335.0845566492. The cubic root of 11122789 is about 223.2224649583. Note that the first 3 decimals are identical.

It can be divided in two parts, 11122 and 789, that added together give a palindrome (11911).

The spelling of 11122789 in words is "eleven million, one hundred twenty-two thousand, seven hundred eighty-nine".