42443533439 has 4 divisors (see below), whose sum is σ = 44677403640. Its totient is φ = 40209663240.

The previous prime is 42443533427. The next prime is 42443533487. The reversal of 42443533439 is 93433534424.

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 42443533439 - 2⁸ = 42443533183 is a prime.

It is a super-2 number, since 2×42443533439² (a number of 22 digits) contains 22 as substring.

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 42443533439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42443533739) 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, 1116935072 + ... + 1116935109.

It is an arithmetic number, because the mean of its divisors is an integer number (11169350910).

Almost surely, 2^42443533439 is an apocalyptic number.

42443533439 is a deficient number, since it is larger than the sum of its proper divisors (2233870201).

42443533439 is a wasteful number, since it uses less digits than its factorization.

42443533439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233870200.

The product of its digits is 1866240, while the sum is 44.

The spelling of 42443533439 in words is "forty-two billion, four hundred forty-three million, five hundred thirty-three thousand, four hundred thirty-nine".