39862712105 has 4 divisors (see below), whose sum is σ = 47835254532. Its totient is φ = 31890169680.

The previous prime is 39862712093. The next prime is 39862712137. The reversal of 39862712105 is 50121726893.

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 31843688704 + 8019023401 = 178448^2 + 89549^2 .

It is not a de Polignac number, because 39862712105 - 2⁶ = 39862712041 is a prime.

It is a super-2 number, since 2×39862712105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3986271206 + ... + 3986271215.

It is an arithmetic number, because the mean of its divisors is an integer number (11958813633).

Almost surely, 2^39862712105 is an apocalyptic number.

It is an amenable number.

39862712105 is a deficient number, since it is larger than the sum of its proper divisors (7972542427).

39862712105 is an equidigital number, since it uses as much as digits as its factorization.

39862712105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7972542426.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 39862712105 in words is "thirty-nine billion, eight hundred sixty-two million, seven hundred twelve thousand, one hundred five".