229235729 has 8 divisors (see below), whose sum is σ = 230633832. Its totient is φ = 227842560.

The previous prime is 229235693. The next prime is 229235767. The reversal of 229235729 is 927532922.

229235729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16129 + 229219600 = 127^2 + 15140^2 .

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 229235729 - 2¹² = 229231633 is a prime.

It is a super-2 number, since 2×229235729² = 105098038900322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229235789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130799 + ... + 132539.

It is an arithmetic number, because the mean of its divisors is an integer number (28829229).

Almost surely, 2^229235729 is an apocalyptic number.

It is an amenable number.

229235729 is a deficient number, since it is larger than the sum of its proper divisors (1398103).

229235729 is a wasteful number, since it uses less digits than its factorization.

229235729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467.

The product of its digits is 136080, while the sum is 41.

The square root of 229235729 is about 15140.5326524531. The cubic root of 229235729 is about 612.0131721786.

The spelling of 229235729 in words is "two hundred twenty-nine million, two hundred thirty-five thousand, seven hundred twenty-nine".