13878743 has 2 divisors, whose sum is σ = 13878744. Its totient is φ = 13878742.

The previous prime is 13878719. The next prime is 13878751. The reversal of 13878743 is 34787831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13878743 - 2¹² = 13874647 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13878743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13878763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6939371 + 6939372.

It is an arithmetic number, because the mean of its divisors is an integer number (6939372).

Almost surely, 2^13878743 is an apocalyptic number.

13878743 is a deficient number, since it is larger than the sum of its proper divisors (1).

13878743 is an equidigital number, since it uses as much as digits as its factorization.

13878743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 13878743 is about 3725.4184999809. The cubic root of 13878743 is about 240.3163825107.

The spelling of 13878743 in words is "thirteen million, eight hundred seventy-eight thousand, seven hundred forty-three".