39856056220 has 24 divisors (see below), whose sum is σ = 84015971424. Its totient is φ = 15881802816.

The previous prime is 39856056209. The next prime is 39856056221. The reversal of 39856056220 is 2265065893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39856056221) 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 7 ways as a sum of consecutive naturals, for example, 3783339 + ... + 3793858.

It is an arithmetic number, because the mean of its divisors is an integer number (3500665476).

Almost surely, 2^39856056220 is an apocalyptic number.

It is an amenable number.

39856056220 is an abundant number, since it is smaller than the sum of its proper divisors (44159915204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39856056220 is a wasteful number, since it uses less digits than its factorization.

39856056220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577469 (or 7577467 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 39856056220 in words is "thirty-nine billion, eight hundred fifty-six million, fifty-six thousand, two hundred twenty".