5443942509 has 6 divisors (see below), whose sum is σ = 7863472526. Its totient is φ = 3629295000.

The previous prime is 5443942507. The next prime is 5443942549. The reversal of 5443942509 is 9052493445.

5443942509 is a `hidden beast` number, since 5 + 4 + 4 + 394 + 250 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5379782409 + 64160100 = 73347^2 + 8010^2 .

It is not a de Polignac number, because 5443942509 - 2¹ = 5443942507 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 (5443942507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 302441242 + ... + 302441259.

Almost surely, 2^5443942509 is an apocalyptic number.

It is an amenable number.

5443942509 is a deficient number, since it is larger than the sum of its proper divisors (2419530017).

5443942509 is a wasteful number, since it uses less digits than its factorization.

5443942509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604882507 (or 604882504 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The square root of 5443942509 is about 73783.0773890599. The cubic root of 5443942509 is about 1759.1566324574.

The spelling of 5443942509 in words is "five billion, four hundred forty-three million, nine hundred forty-two thousand, five hundred nine".