229942291 has 2 divisors, whose sum is σ = 229942292. Its totient is φ = 229942290.

The previous prime is 229942267. The next prime is 229942331. The reversal of 229942291 is 192249922.

It is an a-pointer prime, because the next prime (229942331) can be obtained adding 229942291 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229942291 - 2¹⁵ = 229909523 is a prime.

It is not a weakly prime, because it can be changed into another prime (229942211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114971145 + 114971146.

It is an arithmetic number, because the mean of its divisors is an integer number (114971146).

Almost surely, 2^229942291 is an apocalyptic number.

229942291 is a deficient number, since it is larger than the sum of its proper divisors (1).

229942291 is an equidigital number, since it uses as much as digits as its factorization.

229942291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 229942291 is about 15163.8481593559. The cubic root of 229942291 is about 612.6413199388.

The spelling of 229942291 in words is "two hundred twenty-nine million, nine hundred forty-two thousand, two hundred ninety-one".