43442994239 has 4 divisors (see below), whose sum is σ = 45729467640. Its totient is φ = 41156520840.

The previous prime is 43442994197. The next prime is 43442994247. The reversal of 43442994239 is 93249924434.

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

It is a cyclic number.

It is not a de Polignac number, because 43442994239 - 2⁸ = 43442993983 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 (43442934239) 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, 1143236672 + ... + 1143236709.

It is an arithmetic number, because the mean of its divisors is an integer number (11432366910).

Almost surely, 2^43442994239 is an apocalyptic number.

43442994239 is a deficient number, since it is larger than the sum of its proper divisors (2286473401).

43442994239 is a wasteful number, since it uses less digits than its factorization.

43442994239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286473400.

The product of its digits is 6718464, while the sum is 53.

The spelling of 43442994239 in words is "forty-three billion, four hundred forty-two million, nine hundred ninety-four thousand, two hundred thirty-nine".