229909805 has 6 divisors (see below), whose sum is σ = 275932458. Its totient is φ = 183900720.

The previous prime is 229909789. The next prime is 229909871. The reversal of 229909805 is 508909922.

229909805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 14730244 + 215179561 = 3838^2 + 14669^2 .

It is not a de Polignac number, because 229909805 - 2⁴ = 229909789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30515 + ... + 37295.

It is an arithmetic number, because the mean of its divisors is an integer number (45988743).

Almost surely, 2^229909805 is an apocalyptic number.

It is an amenable number.

229909805 is a deficient number, since it is larger than the sum of its proper divisors (46022653).

229909805 is an frugal number, since it uses more digits than its factorization.

229909805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13567 (or 6786 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 229909805 is about 15162.7769554261. The cubic root of 229909805 is about 612.6124674774.

The spelling of 229909805 in words is "two hundred twenty-nine million, nine hundred nine thousand, eight hundred five".