384740775 has 18 divisors (see below), whose sum is σ = 689113880. Its totient is φ = 205194960.

The previous prime is 384740771. The next prime is 384740789. The reversal of 384740775 is 577047483.

It is not a de Polignac number, because 384740775 - 2² = 384740771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 384740775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384740771) 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 17 ways as a sum of consecutive naturals, for example, 854755 + ... + 855204.

Almost surely, 2^384740775 is an apocalyptic number.

384740775 is a deficient number, since it is larger than the sum of its proper divisors (304373105).

384740775 is a wasteful number, since it uses less digits than its factorization.

384740775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709975 (or 1709967 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The square root of 384740775 is about 19614.8100933963. The cubic root of 384740775 is about 727.3153249315.

The spelling of 384740775 in words is "three hundred eighty-four million, seven hundred forty thousand, seven hundred seventy-five".