384009999 has 8 divisors (see below), whose sum is σ = 512149680. Its totient is φ = 255938496.

The previous prime is 384009959. The next prime is 384010019. The reversal of 384009999 is 999900483.

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

It is not a de Polignac number, because 384009999 - 2⁹ = 384009487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384009919) 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, 2004 + ... + 27785.

It is an arithmetic number, because the mean of its divisors is an integer number (64018710).

Almost surely, 2^384009999 is an apocalyptic number.

384009999 is a deficient number, since it is larger than the sum of its proper divisors (128139681).

384009999 is a wasteful number, since it uses less digits than its factorization.

384009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34089.

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 384009999 is about 19596.1730702706. The cubic root of 384009999 is about 726.8545458937.

The spelling of 384009999 in words is "three hundred eighty-four million, nine thousand, nine hundred ninety-nine".