39805417212 has 48 divisors (see below), whose sum is σ = 102051868800. Its totient is φ = 11975463360.

The previous prime is 39805417163. The next prime is 39805417213. The reversal of 39805417212 is 21271450893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39805417213) 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 15 ways as a sum of consecutive naturals, for example, 1066387 + ... + 1103082.

It is an arithmetic number, because the mean of its divisors is an integer number (2126080600).

Almost surely, 2^39805417212 is an apocalyptic number.

It is an amenable number.

39805417212 is an abundant number, since it is smaller than the sum of its proper divisors (62246451588).

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

39805417212 is a wasteful number, since it uses less digits than its factorization.

39805417212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169626 (or 2169624 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 39805417212 in words is "thirty-nine billion, eight hundred five million, four hundred seventeen thousand, two hundred twelve".