13856129 has 8 divisors (see below), whose sum is σ = 15865728. Its totient is φ = 11854080.

The previous prime is 13856119. The next prime is 13856137. The reversal of 13856129 is 92165831.

13856129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13856129 - 2⁸ = 13855873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13856119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2849 + ... + 5985.

It is an arithmetic number, because the mean of its divisors is an integer number (1983216).

Almost surely, 2^13856129 is an apocalyptic number.

It is an amenable number.

13856129 is a deficient number, since it is larger than the sum of its proper divisors (2009599).

13856129 is an equidigital number, since it uses as much as digits as its factorization.

13856129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775.

The product of its digits is 12960, while the sum is 35.

The square root of 13856129 is about 3722.3821673762. The cubic root of 13856129 is about 240.1857878545.

The spelling of 13856129 in words is "thirteen million, eight hundred fifty-six thousand, one hundred twenty-nine".