229720293 has 40 divisors (see below), whose sum is σ = 376253856. Its totient is φ = 139093200.

The previous prime is 229720277. The next prime is 229720307. The reversal of 229720293 is 392027922.

It is a happy number.

It is not a de Polignac number, because 229720293 - 2⁴ = 229720277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229720213) 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 39 ways as a sum of consecutive naturals, for example, 215983 + ... + 217043.

Almost surely, 2^229720293 is an apocalyptic number.

It is an amenable number.

229720293 is a deficient number, since it is larger than the sum of its proper divisors (146533563).

229720293 is an frugal number, since it uses more digits than its factorization.

229720293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 229720293 is about 15156.5264160361. The cubic root of 229720293 is about 612.4440980773. Note that the first 3 decimals are identical.

The spelling of 229720293 in words is "two hundred twenty-nine million, seven hundred twenty thousand, two hundred ninety-three".