384685839 has 12 divisors (see below), whose sum is σ = 562692000. Its totient is φ = 253210464.

The previous prime is 384685831. The next prime is 384685867. The reversal of 384685839 is 938586483.

It is a happy number.

It is not a de Polignac number, because 384685839 - 2³ = 384685831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384685831) 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 11 ways as a sum of consecutive naturals, for example, 269814 + ... + 271235.

It is an arithmetic number, because the mean of its divisors is an integer number (46891000).

Almost surely, 2^384685839 is an apocalyptic number.

384685839 is a deficient number, since it is larger than the sum of its proper divisors (178006161).

384685839 is a wasteful number, since it uses less digits than its factorization.

384685839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541134 (or 541131 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 384685839 is about 19613.4096729763. The cubic root of 384685839 is about 727.2807062141.

The spelling of 384685839 in words is "three hundred eighty-four million, six hundred eighty-five thousand, eight hundred thirty-nine".