229173691 has 2 divisors, whose sum is σ = 229173692. Its totient is φ = 229173690.

The previous prime is 229173673. The next prime is 229173697. The reversal of 229173691 is 196371922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229173691 - 2⁹ = 229173179 is a prime.

It is not a weakly prime, because it can be changed into another prime (229173697) 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 as a sum of consecutive naturals, namely, 114586845 + 114586846.

It is an arithmetic number, because the mean of its divisors is an integer number (114586846).

Almost surely, 2^229173691 is an apocalyptic number.

229173691 is a deficient number, since it is larger than the sum of its proper divisors (1).

229173691 is an equidigital number, since it uses as much as digits as its factorization.

229173691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 229173691 is about 15138.4837748039. The cubic root of 229173691 is about 611.9579575473.

The spelling of 229173691 in words is "two hundred twenty-nine million, one hundred seventy-three thousand, six hundred ninety-one".