229938321 has 4 divisors (see below), whose sum is σ = 306584432. Its totient is φ = 153292212.

The previous prime is 229938307. The next prime is 229938343. The reversal of 229938321 is 123839922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 229938321 - 2⁷ = 229938193 is a prime.

It is a Duffinian number.

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 229938321.

It is not an unprimeable number, because it can be changed into a prime (229936321) 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 3 ways as a sum of consecutive naturals, for example, 38323051 + ... + 38323056.

It is an arithmetic number, because the mean of its divisors is an integer number (76646108).

Almost surely, 2^229938321 is an apocalyptic number.

It is an amenable number.

229938321 is a deficient number, since it is larger than the sum of its proper divisors (76646111).

229938321 is an equidigital number, since it uses as much as digits as its factorization.

229938321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76646110.

The product of its digits is 46656, while the sum is 39.

The square root of 229938321 is about 15163.7172553434. The cubic root of 229938321 is about 612.6377941265.

The spelling of 229938321 in words is "two hundred twenty-nine million, nine hundred thirty-eight thousand, three hundred twenty-one".