13280439 has 4 divisors (see below), whose sum is σ = 17707256. Its totient is φ = 8853624.

The previous prime is 13280437. The next prime is 13280441. The reversal of 13280439 is 93408231.

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

It is an interprime number because it is at equal distance from previous prime (13280437) and next prime (13280441).

It is not a de Polignac number, because 13280439 - 2¹ = 13280437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213404 + ... + 2213409.

It is an arithmetic number, because the mean of its divisors is an integer number (4426814).

Almost surely, 2^13280439 is an apocalyptic number.

13280439 is a deficient number, since it is larger than the sum of its proper divisors (4426817).

13280439 is an equidigital number, since it uses as much as digits as its factorization.

13280439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426816.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13280439 is about 3644.2336642976. The cubic root of 13280439 is about 236.8122389032.

The spelling of 13280439 in words is "thirteen million, two hundred eighty thousand, four hundred thirty-nine".