13239741 has 4 divisors (see below), whose sum is σ = 17652992. Its totient is φ = 8826492.

The previous prime is 13239731. The next prime is 13239749. The reversal of 13239741 is 14793231.

13239741 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13239741 - 2⁷ = 13239613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13239699 and 13239708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13239749) 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, 2206621 + ... + 2206626.

It is an arithmetic number, because the mean of its divisors is an integer number (4413248).

Almost surely, 2^13239741 is an apocalyptic number.

It is an amenable number.

13239741 is a deficient number, since it is larger than the sum of its proper divisors (4413251).

13239741 is an equidigital number, since it uses as much as digits as its factorization.

13239741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413250.

The product of its digits is 4536, while the sum is 30.

The square root of 13239741 is about 3638.6454897393. The cubic root of 13239741 is about 236.5700871110.

The spelling of 13239741 in words is "thirteen million, two hundred thirty-nine thousand, seven hundred forty-one".