13188239 has 2 divisors, whose sum is σ = 13188240. Its totient is φ = 13188238.

The previous prime is 13188221. The next prime is 13188251. The reversal of 13188239 is 93288131.

It is a strong prime.

It is an emirp because it is prime and its reverse (93288131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13188239 - 2⁸ = 13187983 is a prime.

It is a super-2 number, since 2×13188239² = 347859295842242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 13188199 and 13188208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13188739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6594119 + 6594120.

It is an arithmetic number, because the mean of its divisors is an integer number (6594120).

Almost surely, 2^13188239 is an apocalyptic number.

13188239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13188239 is an equidigital number, since it uses as much as digits as its factorization.

13188239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 13188239 is about 3631.5615098742. The cubic root of 13188239 is about 236.2629394852.

The spelling of 13188239 in words is "thirteen million, one hundred eighty-eight thousand, two hundred thirty-nine".