43439020540 has 48 divisors (see below), whose sum is σ = 96562176480. Its totient is φ = 16386289920.

The previous prime is 43439020531. The next prime is 43439020549. The reversal of 43439020540 is 4502093434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43439020531) and next prime (43439020549).

It is a junction number, because it is equal to n+sod(n) for n = 43439020496 and 43439020505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43439020549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845931 + ... + 895810.

It is an arithmetic number, because the mean of its divisors is an integer number (2011712010).

Almost surely, 2^43439020540 is an apocalyptic number.

It is an amenable number.

43439020540 is an abundant number, since it is smaller than the sum of its proper divisors (53123155940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43439020540 is a wasteful number, since it uses less digits than its factorization.

43439020540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741822 (or 1741820 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 43439020540 in words is "forty-three billion, four hundred thirty-nine million, twenty thousand, five hundred forty".