13389449 has 4 divisors (see below), whose sum is σ = 13751364. Its totient is φ = 13027536.

The previous prime is 13389437. The next prime is 13389457. The reversal of 13389449 is 94498331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94498331 = 89 ⋅1061779.

It can be written as a sum of positive squares in 2 ways, for example, as 12816400 + 573049 = 3580^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 13389449 - 2⁸ = 13389193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13389419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180902 + ... + 180975.

It is an arithmetic number, because the mean of its divisors is an integer number (3437841).

Almost surely, 2^13389449 is an apocalyptic number.

It is an amenable number.

13389449 is a deficient number, since it is larger than the sum of its proper divisors (361915).

13389449 is an equidigital number, since it uses as much as digits as its factorization.

13389449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361914.

The product of its digits is 93312, while the sum is 41.

The square root of 13389449 is about 3659.1596029690. The cubic root of 13389449 is about 237.4584170966.

The spelling of 13389449 in words is "thirteen million, three hundred eighty-nine thousand, four hundred forty-nine".