43822013849 has 4 divisors (see below), whose sum is σ = 43824049764. Its totient is φ = 43819977936.

The previous prime is 43822013771. The next prime is 43822013933. The reversal of 43822013849 is 94831022834.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27371386249 + 16450627600 = 165443^2 + 128260^2 .

It is a cyclic number.

It is not a de Polignac number, because 43822013849 - 2²⁴ = 43805236633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43822013749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985322 + ... + 1028835.

It is an arithmetic number, because the mean of its divisors is an integer number (10956012441).

Almost surely, 2^43822013849 is an apocalyptic number.

It is an amenable number.

43822013849 is a deficient number, since it is larger than the sum of its proper divisors (2035915).

43822013849 is a wasteful number, since it uses less digits than its factorization.

43822013849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035914.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 43822013849 in words is "forty-three billion, eight hundred twenty-two million, thirteen thousand, eight hundred forty-nine".