229539839 has 4 divisors (see below), whose sum is σ = 239519856. Its totient is φ = 219559824.

The previous prime is 229539833. The next prime is 229539847. The reversal of 229539839 is 938935922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938935922 = 2 ⋅469467961.

It is a cyclic number.

It is not a de Polignac number, because 229539839 - 2²⁴ = 212762623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229539833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4989974 + ... + 4990019.

It is an arithmetic number, because the mean of its divisors is an integer number (59879964).

Almost surely, 2^229539839 is an apocalyptic number.

229539839 is a deficient number, since it is larger than the sum of its proper divisors (9980017).

229539839 is an equidigital number, since it uses as much as digits as its factorization.

229539839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980016.

The product of its digits is 1049760, while the sum is 50.

The square root of 229539839 is about 15150.5722334175. The cubic root of 229539839 is about 612.2836900478.

The spelling of 229539839 in words is "two hundred twenty-nine million, five hundred thirty-nine thousand, eight hundred thirty-nine".