13868429 has 4 divisors (see below), whose sum is σ = 13875900. Its totient is φ = 13860960.

The previous prime is 13868419. The next prime is 13868443. The reversal of 13868429 is 92486831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 348100 + 13520329 = 590^2 + 3677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13868429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13868419) 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, 1439 + ... + 5459.

It is an arithmetic number, because the mean of its divisors is an integer number (3468975).

Almost surely, 2^13868429 is an apocalyptic number.

It is an amenable number.

13868429 is a deficient number, since it is larger than the sum of its proper divisors (7471).

13868429 is an equidigital number, since it uses as much as digits as its factorization.

13868429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7470.

The product of its digits is 82944, while the sum is 41.

The square root of 13868429 is about 3724.0339686958. The cubic root of 13868429 is about 240.2568373146.

The spelling of 13868429 in words is "thirteen million, eight hundred sixty-eight thousand, four hundred twenty-nine".