229191329 has 2 divisors, whose sum is σ = 229191330. Its totient is φ = 229191328.

The previous prime is 229191257. The next prime is 229191349. The reversal of 229191329 is 923191922.

229191329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211760704 + 17430625 = 14552^2 + 4175^2 .

It is a cyclic number.

It is not a de Polignac number, because 229191329 - 2⁸ = 229191073 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 229191292 and 229191301.

It is not a weakly prime, because it can be changed into another prime (229191349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114595664 + 114595665.

It is an arithmetic number, because the mean of its divisors is an integer number (114595665).

Almost surely, 2^229191329 is an apocalyptic number.

It is an amenable number.

229191329 is a deficient number, since it is larger than the sum of its proper divisors (1).

229191329 is an equidigital number, since it uses as much as digits as its factorization.

229191329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 38.

The square root of 229191329 is about 15139.0663186341. The cubic root of 229191329 is about 611.9736566117.

The spelling of 229191329 in words is "two hundred twenty-nine million, one hundred ninety-one thousand, three hundred twenty-nine".