11213789 has 4 divisors (see below), whose sum is σ = 11250624. Its totient is φ = 11176956.

The previous prime is 11213773. The next prime is 11213809. The reversal of 11213789 is 98731211.

11213789 is digitally balanced in base 3, 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 11213789 - 2⁴ = 11213773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213729) 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, 17957 + ... + 18570.

It is an arithmetic number, because the mean of its divisors is an integer number (2812656).

Almost surely, 2^11213789 is an apocalyptic number.

It is an amenable number.

11213789 is a deficient number, since it is larger than the sum of its proper divisors (36835).

11213789 is an equidigital number, since it uses as much as digits as its factorization.

11213789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36834.

The product of its digits is 3024, while the sum is 32.

The square root of 11213789 is about 3348.6995983516. The cubic root of 11213789 is about 223.8295698192.

The spelling of 11213789 in words is "eleven million, two hundred thirteen thousand, seven hundred eighty-nine".