13538229 has 4 divisors (see below), whose sum is σ = 18050976. Its totient is φ = 9025484.

The previous prime is 13538197. The next prime is 13538233. The reversal of 13538229 is 92283531.

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 cyclic number.

It is not a de Polignac number, because 13538229 - 2⁵ = 13538197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13538229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13538269) 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, 2256369 + ... + 2256374.

It is an arithmetic number, because the mean of its divisors is an integer number (4512744).

Almost surely, 2^13538229 is an apocalyptic number.

It is an amenable number.

13538229 is a deficient number, since it is larger than the sum of its proper divisors (4512747).

13538229 is an equidigital number, since it uses as much as digits as its factorization.

13538229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512746.

The product of its digits is 12960, while the sum is 33.

The square root of 13538229 is about 3679.4332444006. The cubic root of 13538229 is about 238.3347043243.

The spelling of 13538229 in words is "thirteen million, five hundred thirty-eight thousand, two hundred twenty-nine".