384955321 has 4 divisors (see below), whose sum is σ = 385798132. Its totient is φ = 384112512.

The previous prime is 384955313. The next prime is 384955379. The reversal of 384955321 is 123559483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 351187600 + 33767721 = 18740^2 + 5811^2 .

It is a cyclic number.

It is not a de Polignac number, because 384955321 - 2³ = 384955313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384955381) 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 3 ways as a sum of consecutive naturals, for example, 420720 + ... + 421633.

It is an arithmetic number, because the mean of its divisors is an integer number (96449533).

Almost surely, 2^384955321 is an apocalyptic number.

It is an amenable number.

384955321 is a deficient number, since it is larger than the sum of its proper divisors (842811).

384955321 is an equidigital number, since it uses as much as digits as its factorization.

384955321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842810.

The product of its digits is 129600, while the sum is 40.

The square root of 384955321 is about 19620.2783109720. The cubic root of 384955321 is about 727.4504926494.

The spelling of 384955321 in words is "three hundred eighty-four million, nine hundred fifty-five thousand, three hundred twenty-one".