39987684260 has 24 divisors (see below), whose sum is σ = 83994628536. Its totient is φ = 15991170560.

The previous prime is 39987684197. The next prime is 39987684313. The reversal of 39987684260 is 6248678993.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2021941156 + 37965743104 = 44966^2 + 194848^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39987684193 and 39987684202.

It is an unprimeable number.

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, 159221 + ... + 324540.

It is an arithmetic number, because the mean of its divisors is an integer number (3499776189).

Almost surely, 2^39987684260 is an apocalyptic number.

It is an amenable number.

39987684260 is an abundant number, since it is smaller than the sum of its proper divisors (44006944276).

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

39987684260 is a wasteful number, since it uses less digits than its factorization.

39987684260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487903 (or 487901 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 39987684260 in words is "thirty-nine billion, nine hundred eighty-seven million, six hundred eighty-four thousand, two hundred sixty".