384224217 has 16 divisors (see below), whose sum is σ = 555683520. Its totient is φ = 234741312.

The previous prime is 384224209. The next prime is 384224233. The reversal of 384224217 is 712422483.

It is a happy number.

It is not a de Polignac number, because 384224217 - 2³ = 384224209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (384222217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30018 + ... + 40859.

It is an arithmetic number, because the mean of its divisors is an integer number (34730220).

Almost surely, 2^384224217 is an apocalyptic number.

It is an amenable number.

384224217 is a deficient number, since it is larger than the sum of its proper divisors (171459303).

384224217 is a wasteful number, since it uses less digits than its factorization.

384224217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71032.

The product of its digits is 21504, while the sum is 33.

The square root of 384224217 is about 19601.6381203205. The cubic root of 384224217 is about 726.9896781240.

The spelling of 384224217 in words is "three hundred eighty-four million, two hundred twenty-four thousand, two hundred seventeen".