39987684276 has 12 divisors (see below), whose sum is σ = 93304596672. Its totient is φ = 13329228088.

The previous prime is 39987684197. The next prime is 39987684313. The reversal of 39987684276 is 67248678993.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 39987684276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666153500 + ... + 1666153523.

It is an arithmetic number, because the mean of its divisors is an integer number (7775383056).

Almost surely, 2^39987684276 is an apocalyptic number.

It is an amenable number.

39987684276 is an abundant number, since it is smaller than the sum of its proper divisors (53316912396).

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

39987684276 is a wasteful number, since it uses less digits than its factorization.

39987684276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332307030 (or 3332307028 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 69.

The spelling of 39987684276 in words is "thirty-nine billion, nine hundred eighty-seven million, six hundred eighty-four thousand, two hundred seventy-six".