229906305 has 12 divisors (see below), whose sum is σ = 398504340. Its totient is φ = 122616672.

The previous prime is 229906301. The next prime is 229906309. The reversal of 229906305 is 503609922.

It is an interprime number because it is at equal distance from previous prime (229906301) and next prime (229906309).

It can be written as a sum of positive squares in 2 ways, for example, as 147768336 + 82137969 = 12156^2 + 9063^2 .

It is not a de Polignac number, because 229906305 - 2² = 229906301 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 229906305.

It is not an unprimeable number, because it can be changed into a prime (229906301) 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 in 11 ways as a sum of consecutive naturals, for example, 2554470 + ... + 2554559.

It is an arithmetic number, because the mean of its divisors is an integer number (33208695).

Almost surely, 2^229906305 is an apocalyptic number.

It is an amenable number.

229906305 is a deficient number, since it is larger than the sum of its proper divisors (168598035).

229906305 is a wasteful number, since it uses less digits than its factorization.

229906305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109040 (or 5109037 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 229906305 is about 15162.6615407718. The cubic root of 229906305 is about 612.6093587880.

The spelling of 229906305 in words is "two hundred twenty-nine million, nine hundred six thousand, three hundred five".