13643229 has 8 divisors (see below), whose sum is σ = 18334720. Its totient is φ = 9023616.

The previous prime is 13643213. The next prime is 13643239. The reversal of 13643229 is 92234631.

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

It is not a de Polignac number, because 13643229 - 2⁴ = 13643213 is a prime.

It is a super-2 number, since 2×13643229² = 372275395092882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13643196 and 13643205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17524 + ... + 18285.

It is an arithmetic number, because the mean of its divisors is an integer number (2291840).

Almost surely, 2^13643229 is an apocalyptic number.

It is an amenable number.

13643229 is a deficient number, since it is larger than the sum of its proper divisors (4691491).

13643229 is a wasteful number, since it uses less digits than its factorization.

13643229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35939.

The product of its digits is 7776, while the sum is 30.

The square root of 13643229 is about 3693.6741870392. The cubic root of 13643229 is about 238.9492781727.

It can be divided in two parts, 136 and 43229, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 13643229 in words is "thirteen million, six hundred forty-three thousand, two hundred twenty-nine".