39579543049 has 4 divisors (see below), whose sum is σ = 39722429764. Its totient is φ = 39436656336.

The previous prime is 39579543019. The next prime is 39579543053. The reversal of 39579543049 is 94034597593.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13773369600 + 25806173449 = 117360^2 + 160643^2 .

It is a cyclic number.

It is not a de Polignac number, because 39579543049 - 2³³ = 30989608457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39579542984 and 39579543002.

It is not an unprimeable number, because it can be changed into a prime (39579543019) 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 3 ways as a sum of consecutive naturals, for example, 71442942 + ... + 71443495.

It is an arithmetic number, because the mean of its divisors is an integer number (9930607441).

Almost surely, 2^39579543049 is an apocalyptic number.

It is an amenable number.

39579543049 is a deficient number, since it is larger than the sum of its proper divisors (142886715).

39579543049 is a wasteful number, since it uses less digits than its factorization.

39579543049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142886714.

The product of its (nonzero) digits is 18370800, while the sum is 58.

The spelling of 39579543049 in words is "thirty-nine billion, five hundred seventy-nine million, five hundred forty-three thousand, forty-nine".