384874505 has 4 divisors (see below), whose sum is σ = 461849412. Its totient is φ = 307899600.

The previous prime is 384874489. The next prime is 384874519. The reversal of 384874505 is 505478483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505478483 = 1049 ⋅481867.

It can be written as a sum of positive squares in 2 ways, for example, as 298978681 + 85895824 = 17291^2 + 9268^2 .

It is not a de Polignac number, because 384874505 - 2⁴ = 384874489 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38487446 + ... + 38487455.

It is an arithmetic number, because the mean of its divisors is an integer number (115462353).

Almost surely, 2^384874505 is an apocalyptic number.

It is an amenable number.

384874505 is a deficient number, since it is larger than the sum of its proper divisors (76974907).

384874505 is an equidigital number, since it uses as much as digits as its factorization.

384874505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76974906.

The product of its (nonzero) digits is 537600, while the sum is 44.

The square root of 384874505 is about 19618.2187009932. The cubic root of 384874505 is about 727.3995830587.

The spelling of 384874505 in words is "three hundred eighty-four million, eight hundred seventy-four thousand, five hundred five".