13876729 has 2 divisors, whose sum is σ = 13876730. Its totient is φ = 13876728.

The previous prime is 13876721. The next prime is 13876757. The reversal of 13876729 is 92767831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7551504 + 6325225 = 2748^2 + 2515^2 .

It is a cyclic number.

It is not a de Polignac number, because 13876729 - 2³ = 13876721 is a prime.

It is not a weakly prime, because it can be changed into another prime (13876721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6938364 + 6938365.

It is an arithmetic number, because the mean of its divisors is an integer number (6938365).

Almost surely, 2^13876729 is an apocalyptic number.

It is an amenable number.

13876729 is a deficient number, since it is larger than the sum of its proper divisors (1).

13876729 is an equidigital number, since it uses as much as digits as its factorization.

13876729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 13876729 is about 3725.1481849720. The cubic root of 13876729 is about 240.3047575240.

It can be divided in two parts, 138 and 76729, that added together give a palindrome (76867).

The spelling of 13876729 in words is "thirteen million, eight hundred seventy-six thousand, seven hundred twenty-nine".