43549234387 has 4 divisors (see below), whose sum is σ = 43549692336. Its totient is φ = 43548776440.

The previous prime is 43549234381. The next prime is 43549234397. The reversal of 43549234387 is 78343294534.

43549234387 is digitally balanced in base 2, 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, 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-43549234387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43549234381) 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, 26863 + ... + 296344.

It is an arithmetic number, because the mean of its divisors is an integer number (10887423084).

Almost surely, 2^43549234387 is an apocalyptic number.

43549234387 is a deficient number, since it is larger than the sum of its proper divisors (457949).

43549234387 is a wasteful number, since it uses less digits than its factorization.

43549234387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457948.

The product of its digits is 8709120, while the sum is 52.

The spelling of 43549234387 in words is "forty-three billion, five hundred forty-nine million, two hundred thirty-four thousand, three hundred eighty-seven".