384078523 has 4 divisors (see below), whose sum is σ = 397322640. Its totient is φ = 370834408.

The previous prime is 384078503. The next prime is 384078551. The reversal of 384078523 is 325870483.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384078523 is a prime.

It is a Smith number, since the sum of its digits (40) 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 (384078503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6622015 + ... + 6622072.

It is an arithmetic number, because the mean of its divisors is an integer number (99330660).

Almost surely, 2^384078523 is an apocalyptic number.

384078523 is a deficient number, since it is larger than the sum of its proper divisors (13244117).

384078523 is a wasteful number, since it uses less digits than its factorization.

384078523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13244116.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 384078523 is about 19597.9213948827. The cubic root of 384078523 is about 726.8977774230.

The spelling of 384078523 in words is "three hundred eighty-four million, seventy-eight thousand, five hundred twenty-three".