13869129 has 4 divisors (see below), whose sum is σ = 18492176. Its totient is φ = 9246084.

The previous prime is 13869103. The next prime is 13869131. The reversal of 13869129 is 92196831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-13869129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13869139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2311519 + ... + 2311524.

It is an arithmetic number, because the mean of its divisors is an integer number (4623044).

Almost surely, 2^13869129 is an apocalyptic number.

It is an amenable number.

13869129 is a deficient number, since it is larger than the sum of its proper divisors (4623047).

13869129 is an equidigital number, since it uses as much as digits as its factorization.

13869129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623046.

The product of its digits is 23328, while the sum is 39.

The square root of 13869129 is about 3724.1279516150. The cubic root of 13869129 is about 240.2608795162.

The spelling of 13869129 in words is "thirteen million, eight hundred sixty-nine thousand, one hundred twenty-nine".