5643667839 has 4 divisors (see below), whose sum is σ = 7524890456. Its totient is φ = 3762445224.

The previous prime is 5643667823. The next prime is 5643667859. The reversal of 5643667839 is 9387663465.

5643667839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5643667839 - 2⁴ = 5643667823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643667859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940611304 + ... + 940611309.

It is an arithmetic number, because the mean of its divisors is an integer number (1881222614).

Almost surely, 2^5643667839 is an apocalyptic number.

5643667839 is a deficient number, since it is larger than the sum of its proper divisors (1881222617).

5643667839 is a wasteful number, since it uses less digits than its factorization.

5643667839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881222616.

The product of its digits is 19595520, while the sum is 57.

The square root of 5643667839 is about 75124.3491752175. The cubic root of 5643667839 is about 1780.4118727704.

The spelling of 5643667839 in words is "five billion, six hundred forty-three million, six hundred sixty-seven thousand, eight hundred thirty-nine".