384531855 has 8 divisors (see below), whose sum is σ = 615250992. Its totient is φ = 205083648.

The previous prime is 384531821. The next prime is 384531859. The reversal of 384531855 is 558135483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 384531855 - 2⁷ = 384531727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384531859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12817714 + ... + 12817743.

It is an arithmetic number, because the mean of its divisors is an integer number (76906374).

Almost surely, 2^384531855 is an apocalyptic number.

384531855 is a deficient number, since it is larger than the sum of its proper divisors (230719137).

384531855 is a wasteful number, since it uses less digits than its factorization.

384531855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25635465.

The product of its digits is 288000, while the sum is 42.

The square root of 384531855 is about 19609.4838024870. The cubic root of 384531855 is about 727.1836533926.

The spelling of 384531855 in words is "three hundred eighty-four million, five hundred thirty-one thousand, eight hundred fifty-five".