39681889392 has 40 divisors (see below), whose sum is σ = 102720389760. Its totient is φ = 13200349120.

The previous prime is 39681889381. The next prime is 39681889409. The reversal of 39681889392 is 29398818693.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 818292 + ... + 865427.

It is an arithmetic number, because the mean of its divisors is an integer number (2568009744).

Almost surely, 2^39681889392 is an apocalyptic number.

It is an amenable number.

39681889392 is an abundant number, since it is smaller than the sum of its proper divisors (63038500368).

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

39681889392 is a wasteful number, since it uses less digits than its factorization.

39681889392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684221 (or 1684215 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 66.

The spelling of 39681889392 in words is "thirty-nine billion, six hundred eighty-one million, eight hundred eighty-nine thousand, three hundred ninety-two".