389925321 has 8 divisors (see below), whose sum is σ = 520052544. Its totient is φ = 259874160.

The previous prime is 389925313. The next prime is 389925323. The reversal of 389925321 is 123529983.

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

It is not a de Polignac number, because 389925321 - 2³ = 389925313 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (389925323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5725 + ... + 28506.

It is an arithmetic number, because the mean of its divisors is an integer number (65006568).

Almost surely, 2^389925321 is an apocalyptic number.

It is an amenable number.

389925321 is a deficient number, since it is larger than the sum of its proper divisors (130127223).

389925321 is a wasteful number, since it uses less digits than its factorization.

389925321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38031.

The product of its digits is 116640, while the sum is 42.

The square root of 389925321 is about 19746.5268085302. The cubic root of 389925321 is about 730.5677206263.

The spelling of 389925321 in words is "three hundred eighty-nine million, nine hundred twenty-five thousand, three hundred twenty-one".