13224889 has 4 divisors (see below), whose sum is σ = 13233780. Its totient is φ = 13216000.

The previous prime is 13224881. The next prime is 13224901. The reversal of 13224889 is 98842231.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 5978025 + 7246864 = 2445^2 + 2692^2 .

It is a cyclic number.

It is not a de Polignac number, because 13224889 - 2³ = 13224881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13224881) 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, 1612 + ... + 5389.

It is an arithmetic number, because the mean of its divisors is an integer number (3308445).

Almost surely, 2^13224889 is an apocalyptic number.

It is an amenable number.

13224889 is a deficient number, since it is larger than the sum of its proper divisors (8891).

13224889 is an equidigital number, since it uses as much as digits as its factorization.

13224889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8890.

The product of its digits is 27648, while the sum is 37.

The square root of 13224889 is about 3636.6040477346. The cubic root of 13224889 is about 236.4815946057.

The spelling of 13224889 in words is "thirteen million, two hundred twenty-four thousand, eight hundred eighty-nine".