13239673 has 4 divisors (see below), whose sum is σ = 13597540. Its totient is φ = 12881808.

The previous prime is 13239671. The next prime is 13239691. The reversal of 13239673 is 37693231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12766329 + 473344 = 3573^2 + 688^2 .

It is a cyclic number.

It is not a de Polignac number, because 13239673 - 2¹ = 13239671 is a prime.

It is a super-2 number, since 2×13239673² = 350577882293858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13239671) 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, 178878 + ... + 178951.

It is an arithmetic number, because the mean of its divisors is an integer number (3399385).

Almost surely, 2^13239673 is an apocalyptic number.

It is an amenable number.

13239673 is a deficient number, since it is larger than the sum of its proper divisors (357867).

13239673 is an equidigital number, since it uses as much as digits as its factorization.

13239673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357866.

The product of its digits is 20412, while the sum is 34.

The square root of 13239673 is about 3638.6361455908. The cubic root of 13239673 is about 236.5696820982.

The spelling of 13239673 in words is "thirteen million, two hundred thirty-nine thousand, six hundred seventy-three".