13828289 has 4 divisors (see below), whose sum is σ = 13837056. Its totient is φ = 13819524.

The previous prime is 13828279. The next prime is 13828303. The reversal of 13828289 is 98282831.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13828289 - 2²⁰ = 12779713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13828279) 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, 1289 + ... + 5414.

It is an arithmetic number, because the mean of its divisors is an integer number (3459264).

Almost surely, 2^13828289 is an apocalyptic number.

It is an amenable number.

13828289 is a deficient number, since it is larger than the sum of its proper divisors (8767).

13828289 is an equidigital number, since it uses as much as digits as its factorization.

13828289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8766.

The product of its digits is 55296, while the sum is 41.

The square root of 13828289 is about 3718.6407462943. The cubic root of 13828289 is about 240.0248180354.

The spelling of 13828289 in words is "thirteen million, eight hundred twenty-eight thousand, two hundred eighty-nine".