384989 has 8 divisors (see below), whose sum is σ = 433920. Its totient is φ = 338400.

The previous prime is 384973. The next prime is 385001. The reversal of 384989 is 989483.

384989 is nontrivially palindromic in base 2.

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

It is a cyclic number.

It is not a de Polignac number, because 384989 - 2⁴ = 384973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384919) 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, 224 + ... + 905.

It is an arithmetic number, because the mean of its divisors is an integer number (54240).

2³⁸⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

384989 is a deficient number, since it is larger than the sum of its proper divisors (48931).

384989 is a wasteful number, since it uses less digits than its factorization.

384989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171.

The product of its digits is 62208, while the sum is 41.

The square root of 384989 is about 620.4748181836. The cubic root of 384989 is about 72.7471706445.

The spelling of 384989 in words is "three hundred eighty-four thousand, nine hundred eighty-nine".