13239443 has 8 divisors (see below), whose sum is σ = 15155712. Its totient is φ = 11329416.

The previous prime is 13239437. The next prime is 13239461. The reversal of 13239443 is 34493231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13239443 - 2¹⁶ = 13173907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13239493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4646 + ... + 6932.

It is an arithmetic number, because the mean of its divisors is an integer number (1894464).

Almost surely, 2^13239443 is an apocalyptic number.

13239443 is a deficient number, since it is larger than the sum of its proper divisors (1916269).

13239443 is an equidigital number, since it uses as much as digits as its factorization.

13239443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121.

The product of its digits is 7776, while the sum is 29.

The square root of 13239443 is about 3638.6045402049. The cubic root of 13239443 is about 236.5683121917.

The spelling of 13239443 in words is "thirteen million, two hundred thirty-nine thousand, four hundred forty-three".