13438439 has 8 divisors (see below), whose sum is σ = 15403008. Its totient is φ = 11485080.

The previous prime is 13438429. The next prime is 13438441. The reversal of 13438439 is 93483431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13438439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13438399 and 13438408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47 + ... + 5184.

It is an arithmetic number, because the mean of its divisors is an integer number (1925376).

Almost surely, 2^13438439 is an apocalyptic number.

13438439 is a deficient number, since it is larger than the sum of its proper divisors (1964569).

13438439 is an equidigital number, since it uses as much as digits as its factorization.

13438439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605.

The product of its digits is 31104, while the sum is 35.

The square root of 13438439 is about 3665.8476509533. The cubic root of 13438439 is about 237.7476729306.

The spelling of 13438439 in words is "thirteen million, four hundred thirty-eight thousand, four hundred thirty-nine".