229563729 has 6 divisors (see below), whose sum is σ = 331592066. Its totient is φ = 153042480.

The previous prime is 229563707. The next prime is 229563751. The reversal of 229563729 is 927365922.

It is a happy number.

229563729 is a `hidden beast` number, since 2 + 2 + 9 + 5 + 637 + 2 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (229563707) and next prime (229563751).

It can be written as a sum of positive squares in only one way, i.e., 121881600 + 107682129 = 11040^2 + 10377^2 .

It is not a de Polignac number, because 229563729 - 2⁷ = 229563601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229563629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12753532 + ... + 12753549.

Almost surely, 2^229563729 is an apocalyptic number.

It is an amenable number.

229563729 is a deficient number, since it is larger than the sum of its proper divisors (102028337).

229563729 is a wasteful number, since it uses less digits than its factorization.

229563729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25507087 (or 25507084 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 229563729 is about 15151.3606319697. The cubic root of 229563729 is about 612.3049310228.

It can be divided in two parts, 22 and 9563729, that added together give a triangular number (9563751 = T₄₃₇₃).

The spelling of 229563729 in words is "two hundred twenty-nine million, five hundred sixty-three thousand, seven hundred twenty-nine".