13239071 has 4 divisors (see below), whose sum is σ = 13252944. Its totient is φ = 13225200.

The previous prime is 13239059. The next prime is 13239103. The reversal of 13239071 is 17093231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17093231 = 43 ⋅397517.

It is a cyclic number.

It is not a de Polignac number, because 13239071 - 2¹⁰ = 13238047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13239071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13239001) by changing a digit.

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, 5390 + ... + 7451.

It is an arithmetic number, because the mean of its divisors is an integer number (3313236).

Almost surely, 2^13239071 is an apocalyptic number.

13239071 is a deficient number, since it is larger than the sum of its proper divisors (13873).

13239071 is a wasteful number, since it uses less digits than its factorization.

13239071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13872.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13239071 is about 3638.5534213476. The cubic root of 13239071 is about 236.5660964833.

The spelling of 13239071 in words is "thirteen million, two hundred thirty-nine thousand, seventy-one".