39913860722 has 6 divisors (see below), whose sum is σ = 59871214893. Its totient is φ = 19956789092.

The previous prime is 39913860641. The next prime is 39913860751. The reversal of 39913860722 is 22706831993.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39852536161 + 61324561 = 199631^2 + 7831^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=141269.

It is a super-3 number, since 3×39913860722³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 211904 + ... + 353172.

Almost surely, 2^39913860722 is an apocalyptic number.

39913860722 is a deficient number, since it is larger than the sum of its proper divisors (19957354171).

39913860722 is an frugal number, since it uses more digits than its factorization.

39913860722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282540 (or 141271 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 50.

Multiplying 39913860722 by its sum of digits (50), we get a square (1995693036100 = 1412690²).

The spelling of 39913860722 in words is "thirty-nine billion, nine hundred thirteen million, eight hundred sixty thousand, seven hundred twenty-two".