39791117427 has 16 divisors (see below), whose sum is σ = 53215562400. Its totient is φ = 26447092992.

The previous prime is 39791117381. The next prime is 39791117491. The reversal of 39791117427 is 72471119793.

It is not a de Polignac number, because 39791117427 - 2¹¹ = 39791115379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39791117427.

It is not an unprimeable number, because it can be changed into a prime (39791117497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5086423 + ... + 5094239.

It is an arithmetic number, because the mean of its divisors is an integer number (3325972650).

Almost surely, 2^39791117427 is an apocalyptic number.

39791117427 is a deficient number, since it is larger than the sum of its proper divisors (13424444973).

39791117427 is a wasteful number, since it uses less digits than its factorization.

39791117427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12742.

The product of its digits is 666792, while the sum is 51.

The spelling of 39791117427 in words is "thirty-nine billion, seven hundred ninety-one million, one hundred seventeen thousand, four hundred twenty-seven".