384685775 has 12 divisors (see below), whose sum is σ = 505070352. Its totient is φ = 289645440.

The previous prime is 384685753. The next prime is 384685811. The reversal of 384685775 is 577586483.

It is not a de Polignac number, because 384685775 - 2¹² = 384681679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 452147 + ... + 452996.

It is an arithmetic number, because the mean of its divisors is an integer number (42089196).

Almost surely, 2^384685775 is an apocalyptic number.

384685775 is a deficient number, since it is larger than the sum of its proper divisors (120384577).

384685775 is a wasteful number, since it uses less digits than its factorization.

384685775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905170 (or 905165 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 53.

The square root of 384685775 is about 19613.4080414394. The cubic root of 384685775 is about 727.2806658816.

The spelling of 384685775 in words is "three hundred eighty-four million, six hundred eighty-five thousand, seven hundred seventy-five".