39745379539 has 32 divisors (see below), whose sum is σ = 43829139200. Its totient is φ = 35905991040.

The previous prime is 39745379497. The next prime is 39745379573. The reversal of 39745379539 is 93597354793.

It is a cyclic number.

It is not a de Polignac number, because 39745379539 - 2⁹ = 39745379027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39745379239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13163572 + ... + 13166590.

It is an arithmetic number, because the mean of its divisors is an integer number (1369660600).

Almost surely, 2^39745379539 is an apocalyptic number.

39745379539 is a deficient number, since it is larger than the sum of its proper divisors (4083759661).

39745379539 is a wasteful number, since it uses less digits than its factorization.

39745379539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its digits is 96446700, while the sum is 64.

The spelling of 39745379539 in words is "thirty-nine billion, seven hundred forty-five million, three hundred seventy-nine thousand, five hundred thirty-nine".