384971893 has 4 divisors (see below), whose sum is σ = 385096768. Its totient is φ = 384847020.

The previous prime is 384971891. The next prime is 384971911. The reversal of 384971893 is 398179483.

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 384971893 - 2¹ = 384971891 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 384971893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384971891) 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, 57693 + ... + 64018.

It is an arithmetic number, because the mean of its divisors is an integer number (96274192).

Almost surely, 2^384971893 is an apocalyptic number.

It is an amenable number.

384971893 is a deficient number, since it is larger than the sum of its proper divisors (124875).

384971893 is a wasteful number, since it uses less digits than its factorization.

384971893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124874.

The product of its digits is 1306368, while the sum is 52.

The square root of 384971893 is about 19620.7006245954. The cubic root of 384971893 is about 727.4609312085.

The spelling of 384971893 in words is "three hundred eighty-four million, nine hundred seventy-one thousand, eight hundred ninety-three".