13357439 has 4 divisors (see below), whose sum is σ = 13518456. Its totient is φ = 13196424.

The previous prime is 13357397. The next prime is 13357441. The reversal of 13357439 is 93475331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13357439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13357399 and 13357408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13357469) 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, 80384 + ... + 80549.

It is an arithmetic number, because the mean of its divisors is an integer number (3379614).

Almost surely, 2^13357439 is an apocalyptic number.

13357439 is a deficient number, since it is larger than the sum of its proper divisors (161017).

13357439 is an equidigital number, since it uses as much as digits as its factorization.

13357439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161016.

The product of its digits is 34020, while the sum is 35.

The square root of 13357439 is about 3654.7830304958. The cubic root of 13357439 is about 237.2690364076.

The spelling of 13357439 in words is "thirteen million, three hundred fifty-seven thousand, four hundred thirty-nine".