229688429 has 2 divisors, whose sum is σ = 229688430. Its totient is φ = 229688428.

The previous prime is 229688423. The next prime is 229688453. The reversal of 229688429 is 924886922.

229688429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143161225 + 86527204 = 11965^2 + 9302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229688429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229688423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114844214 + 114844215.

It is an arithmetic number, because the mean of its divisors is an integer number (114844215).

Almost surely, 2^229688429 is an apocalyptic number.

It is an amenable number.

229688429 is a deficient number, since it is larger than the sum of its proper divisors (1).

229688429 is an equidigital number, since it uses as much as digits as its factorization.

229688429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 50.

The square root of 229688429 is about 15155.4752152481. The cubic root of 229688429 is about 612.4157798403.

The spelling of 229688429 in words is "two hundred twenty-nine million, six hundred eighty-eight thousand, four hundred twenty-nine".