13239455 has 4 divisors (see below), whose sum is σ = 15887352. Its totient is φ = 10591560.

The previous prime is 13239437. The next prime is 13239461. The reversal of 13239455 is 55493231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55493231 = 733 ⋅75707.

It is not a de Polignac number, because 13239455 - 2⁸ = 13239199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1323941 + ... + 1323950.

It is an arithmetic number, because the mean of its divisors is an integer number (3971838).

Almost surely, 2^13239455 is an apocalyptic number.

13239455 is a deficient number, since it is larger than the sum of its proper divisors (2647897).

13239455 is an equidigital number, since it uses as much as digits as its factorization.

13239455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647896.

The product of its digits is 16200, while the sum is 32.

The square root of 13239455 is about 3638.6061891884. The cubic root of 13239455 is about 236.5683836655.

The spelling of 13239455 in words is "thirteen million, two hundred thirty-nine thousand, four hundred fifty-five".