13629943 has 4 divisors (see below), whose sum is σ = 13637448. Its totient is φ = 13622440.

The previous prime is 13629929. The next prime is 13629989. The reversal of 13629943 is 34992631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 34992631 = 157 ⋅222883.

It is a cyclic number.

It is not a de Polignac number, because 13629943 - 2⁵ = 13629911 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 (13629443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (3409362).

Almost surely, 2^13629943 is an apocalyptic number.

13629943 is a deficient number, since it is larger than the sum of its proper divisors (7505).

13629943 is an equidigital number, since it uses as much as digits as its factorization.

13629943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7504.

The product of its digits is 34992, while the sum is 37.

The square root of 13629943 is about 3691.8752687489. The cubic root of 13629943 is about 238.8716887402.

The spelling of 13629943 in words is "thirteen million, six hundred twenty-nine thousand, nine hundred forty-three".