229293091 has 2 divisors, whose sum is σ = 229293092. Its totient is φ = 229293090.

The previous prime is 229293037. The next prime is 229293133. The reversal of 229293091 is 190392922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229293091 - 2⁹ = 229292579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 229293091.

It is not a weakly prime, because it can be changed into another prime (229293011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114646545 + 114646546.

It is an arithmetic number, because the mean of its divisors is an integer number (114646546).

Almost surely, 2^229293091 is an apocalyptic number.

229293091 is a deficient number, since it is larger than the sum of its proper divisors (1).

229293091 is an equidigital number, since it uses as much as digits as its factorization.

229293091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 229293091 is about 15142.4268530510. The cubic root of 229293091 is about 612.0642162457.

Subtracting from 229293091 its reverse (190392922), we obtain a square (38900169 = 6237²).

The spelling of 229293091 in words is "two hundred twenty-nine million, two hundred ninety-three thousand, ninety-one".