384445221 has 8 divisors (see below), whose sum is σ = 539572320. Its totient is φ = 242807472.

The previous prime is 384445213. The next prime is 384445249. The reversal of 384445221 is 122544483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 384445221 - 2³ = 384445213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384445421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3372270 + ... + 3372383.

It is an arithmetic number, because the mean of its divisors is an integer number (67446540).

Almost surely, 2^384445221 is an apocalyptic number.

It is an amenable number.

384445221 is a deficient number, since it is larger than the sum of its proper divisors (155127099).

384445221 is a wasteful number, since it uses less digits than its factorization.

384445221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744675.

The product of its digits is 30720, while the sum is 33.

The square root of 384445221 is about 19607.2746958877. The cubic root of 384445221 is about 727.1290384458.

The spelling of 384445221 in words is "three hundred eighty-four million, four hundred forty-five thousand, two hundred twenty-one".