384234221 has 16 divisors (see below), whose sum is σ = 467550720. Its totient is φ = 308240640.

The previous prime is 384234209. The next prime is 384234299. The reversal of 384234221 is 122432483.

It is a cyclic number.

It is not a de Polignac number, because 384234221 - 2⁶ = 384234157 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 (384233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12620 + ... + 30458.

It is an arithmetic number, because the mean of its divisors is an integer number (29221920).

Almost surely, 2^384234221 is an apocalyptic number.

It is an amenable number.

384234221 is a deficient number, since it is larger than the sum of its proper divisors (83316499).

384234221 is a wasteful number, since it uses less digits than its factorization.

384234221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18044.

The product of its digits is 9216, while the sum is 29.

The square root of 384234221 is about 19601.8933014135. The cubic root of 384234221 is about 726.9959875837.

The spelling of 384234221 in words is "three hundred eighty-four million, two hundred thirty-four thousand, two hundred twenty-one".