13172839 has 2 divisors, whose sum is σ = 13172840. Its totient is φ = 13172838.

The previous prime is 13172827. The next prime is 13172869. The reversal of 13172839 is 93827131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13172839 - 2¹⁷ = 13041767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13172869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6586419 + 6586420.

It is an arithmetic number, because the mean of its divisors is an integer number (6586420).

Almost surely, 2^13172839 is an apocalyptic number.

13172839 is a deficient number, since it is larger than the sum of its proper divisors (1).

13172839 is an equidigital number, since it uses as much as digits as its factorization.

13172839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 13172839 is about 3629.4405905043. The cubic root of 13172839 is about 236.1709416983.

The spelling of 13172839 in words is "thirteen million, one hundred seventy-two thousand, eight hundred thirty-nine".