229564091 has 4 divisors (see below), whose sum is σ = 229624272. Its totient is φ = 229503912.

The previous prime is 229564067. The next prime is 229564117. The reversal of 229564091 is 190465922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 229564091 - 2¹⁴ = 229547707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229569091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23951 + ... + 32136.

It is an arithmetic number, because the mean of its divisors is an integer number (57406068).

Almost surely, 2^229564091 is an apocalyptic number.

229564091 is a deficient number, since it is larger than the sum of its proper divisors (60181).

229564091 is an equidigital number, since it uses as much as digits as its factorization.

229564091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60180.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 229564091 is about 15151.3725780868. The cubic root of 229564091 is about 612.3052528713.

The spelling of 229564091 in words is "two hundred twenty-nine million, five hundred sixty-four thousand, ninety-one".