384685771 has 4 divisors (see below), whose sum is σ = 384831000. Its totient is φ = 384540544.

The previous prime is 384685753. The next prime is 384685811. The reversal of 384685771 is 177586483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177586483 = 19 ⋅9346657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384685771 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384680771) 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, 68566 + ... + 73963.

It is an arithmetic number, because the mean of its divisors is an integer number (96207750).

Almost surely, 2^384685771 is an apocalyptic number.

384685771 is a deficient number, since it is larger than the sum of its proper divisors (145229).

384685771 is a wasteful number, since it uses less digits than its factorization.

384685771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145228.

The product of its digits is 1128960, while the sum is 49.

The square root of 384685771 is about 19613.4079394683. The cubic root of 384685771 is about 727.2806633608.

The spelling of 384685771 in words is "three hundred eighty-four million, six hundred eighty-five thousand, seven hundred seventy-one".