13829987 has 2 divisors, whose sum is σ = 13829988. Its totient is φ = 13829986.

The previous prime is 13829947. The next prime is 13830001. The reversal of 13829987 is 78992831.

13829987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (78992831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13829987 - 2¹⁰ = 13828963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13829917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6914993 + 6914994.

It is an arithmetic number, because the mean of its divisors is an integer number (6914994).

Almost surely, 2^13829987 is an apocalyptic number.

13829987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13829987 is an equidigital number, since it uses as much as digits as its factorization.

13829987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 47.

The square root of 13829987 is about 3718.8690485146. The cubic root of 13829987 is about 240.0346419902.

The spelling of 13829987 in words is "thirteen million, eight hundred twenty-nine thousand, nine hundred eighty-seven".