384491755 has 4 divisors (see below), whose sum is σ = 461390112. Its totient is φ = 307593400.

The previous prime is 384491747. The next prime is 384491843. The reversal of 384491755 is 557194483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557194483 = 131 ⋅4253393.

It is not a de Polignac number, because 384491755 - 2³ = 384491747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38449171 + ... + 38449180.

It is an arithmetic number, because the mean of its divisors is an integer number (115347528).

Almost surely, 2^384491755 is an apocalyptic number.

384491755 is a deficient number, since it is larger than the sum of its proper divisors (76898357).

384491755 is an equidigital number, since it uses as much as digits as its factorization.

384491755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76898356.

The product of its digits is 604800, while the sum is 46.

The square root of 384491755 is about 19608.4613113829. The cubic root of 384491755 is about 727.1583749683.

It can be divided in two parts, 38449 and 1755, that added together give a palindrome (40204).

The spelling of 384491755 in words is "three hundred eighty-four million, four hundred ninety-one thousand, seven hundred fifty-five".