229731839 has 4 divisors (see below), whose sum is σ = 234066456. Its totient is φ = 225397224.

The previous prime is 229731787. The next prime is 229731841. The reversal of 229731839 is 938137922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938137922 = 2 ⋅469068961.

It is a cyclic number.

It is not a de Polignac number, because 229731839 - 2¹⁶ = 229666303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229731839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229731739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2167229 + ... + 2167334.

It is an arithmetic number, because the mean of its divisors is an integer number (58516614).

Almost surely, 2^229731839 is an apocalyptic number.

229731839 is a deficient number, since it is larger than the sum of its proper divisors (4334617).

229731839 is an equidigital number, since it uses as much as digits as its factorization.

229731839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334616.

The product of its digits is 163296, while the sum is 44.

The square root of 229731839 is about 15156.9073032727. The cubic root of 229731839 is about 612.4543586149.

The spelling of 229731839 in words is "two hundred twenty-nine million, seven hundred thirty-one thousand, eight hundred thirty-nine".