384399493 has 4 divisors (see below), whose sum is σ = 384441568. Its totient is φ = 384357420.

The previous prime is 384399443. The next prime is 384399527. The reversal of 384399493 is 394993483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384399493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 384399493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384399413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921 + ... + 27742.

It is an arithmetic number, because the mean of its divisors is an integer number (96110392).

Almost surely, 2^384399493 is an apocalyptic number.

It is an amenable number.

384399493 is a deficient number, since it is larger than the sum of its proper divisors (42075).

384399493 is a wasteful number, since it uses less digits than its factorization.

384399493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42074.

The product of its digits is 2519424, while the sum is 52.

The square root of 384399493 is about 19606.1085634044. The cubic root of 384399493 is about 727.1002077453.

The spelling of 384399493 in words is "three hundred eighty-four million, three hundred ninety-nine thousand, four hundred ninety-three".