384999879 has 8 divisors (see below), whose sum is σ = 559999872. Its totient is φ = 233333240.

The previous prime is 384999841. The next prime is 384999947. The reversal of 384999879 is 978999483.

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

It is a cyclic number.

It is not a de Polignac number, because 384999879 - 2¹² = 384995783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384999379) 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, 5833299 + ... + 5833364.

It is an arithmetic number, because the mean of its divisors is an integer number (69999984).

Almost surely, 2^384999879 is an apocalyptic number.

384999879 is a deficient number, since it is larger than the sum of its proper divisors (174999993).

384999879 is a wasteful number, since it uses less digits than its factorization.

384999879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11666677.

The product of its digits is 35271936, while the sum is 66.

The square root of 384999879 is about 19621.4137869828. The cubic root of 384999879 is about 727.4785586671.

Subtracting from 384999879 its product of digits (35271936), we obtain a palindrome (349727943).

The spelling of 384999879 in words is "three hundred eighty-four million, nine hundred ninety-nine thousand, eight hundred seventy-nine".