384767993 has 4 divisors (see below), whose sum is σ = 405018960. Its totient is φ = 364517028.

The previous prime is 384767941. The next prime is 384768017. The reversal of 384767993 is 399767483.

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.

It is a cyclic number.

It is not a de Polignac number, because 384767993 - 2²⁶ = 317659129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384760993) 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, 10125455 + ... + 10125492.

It is an arithmetic number, because the mean of its divisors is an integer number (101254740).

Almost surely, 2^384767993 is an apocalyptic number.

It is an amenable number.

384767993 is a deficient number, since it is larger than the sum of its proper divisors (20250967).

384767993 is a wasteful number, since it uses less digits than its factorization.

384767993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20250966.

The product of its digits is 6858432, while the sum is 56.

The square root of 384767993 is about 19615.5038936042. The cubic root of 384767993 is about 727.3324755283.

The spelling of 384767993 in words is "three hundred eighty-four million, seven hundred sixty-seven thousand, nine hundred ninety-three".