229729 has 8 divisors (see below), whose sum is σ = 246240. Its totient is φ = 213696.

The previous prime is 229727. The next prime is 229739. The reversal of 229729 is 927922.

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

It is a cyclic number.

It is not a de Polignac number, because 229729 - 2¹ = 229727 is a prime.

229729 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 229729.

It is not an unprimeable number, because it can be changed into a prime (229727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1977 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (30780).

2²²⁹⁷²⁹ is an apocalyptic number.

It is an amenable number.

229729 is a deficient number, since it is larger than the sum of its proper divisors (16511).

229729 is a wasteful number, since it uses less digits than its factorization.

229729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its digits is 4536, while the sum is 31.

The square root of 229729 is about 479.3005320256. The cubic root of 229729 is about 61.2451835724.

The spelling of 229729 in words is "two hundred twenty-nine thousand, seven hundred twenty-nine".