229578091 has 2 divisors, whose sum is σ = 229578092. Its totient is φ = 229578090.

The previous prime is 229578077. The next prime is 229578101. The reversal of 229578091 is 190875922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229578091 - 2⁵ = 229578059 is a prime.

It is not a weakly prime, because it can be changed into another prime (229578071) 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, 114789045 + 114789046.

It is an arithmetic number, because the mean of its divisors is an integer number (114789046).

Almost surely, 2^229578091 is an apocalyptic number.

229578091 is a deficient number, since it is larger than the sum of its proper divisors (1).

229578091 is an equidigital number, since it uses as much as digits as its factorization.

229578091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 229578091 is about 15151.8345753905. The cubic root of 229578091 is about 612.3176997938.

The spelling of 229578091 in words is "two hundred twenty-nine million, five hundred seventy-eight thousand, ninety-one".