229240729 has 2 divisors, whose sum is σ = 229240730. Its totient is φ = 229240728.

The previous prime is 229240723. The next prime is 229240751. The reversal of 229240729 is 927042922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206583129 + 22657600 = 14373^2 + 4760^2 .

It is a cyclic number.

It is not a de Polignac number, because 229240729 - 2⁹ = 229240217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229240723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114620364 + 114620365.

It is an arithmetic number, because the mean of its divisors is an integer number (114620365).

Almost surely, 2^229240729 is an apocalyptic number.

It is an amenable number.

229240729 is a deficient number, since it is larger than the sum of its proper divisors (1).

229240729 is an equidigital number, since it uses as much as digits as its factorization.

229240729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 229240729 is about 15140.6977712389. The cubic root of 229240729 is about 612.0176218102.

The spelling of 229240729 in words is "two hundred twenty-nine million, two hundred forty thousand, seven hundred twenty-nine".