384999999 has 8 divisors (see below), whose sum is σ = 514189872. Its totient is φ = 256238400.

The previous prime is 384999997. The next prime is 385000043. The reversal of 384999999 is 999999483.

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

It is not a de Polignac number, because 384999999 - 2¹ = 384999997 is a prime.

384999999 is a modest number, since divided by 99999 gives 3849 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384999997) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 104964 + ... + 108569.

It is an arithmetic number, because the mean of its divisors is an integer number (64273734).

Almost surely, 2^384999999 is an apocalyptic number.

384999999 is a deficient number, since it is larger than the sum of its proper divisors (129189873).

384999999 is a wasteful number, since it uses less digits than its factorization.

384999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214137.

The product of its digits is 51018336, while the sum is 69.

The square root of 384999999 is about 19621.4168448662. The cubic root of 384999999 is about 727.4786342493.

The spelling of 384999999 in words is "three hundred eighty-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".