39643687484 has 6 divisors (see below), whose sum is σ = 69376453104. Its totient is φ = 19821843740.

The previous prime is 39643687469. The next prime is 39643687493. The reversal of 39643687484 is 48478634693.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 4955460932 + ... + 4955460939.

It is an arithmetic number, because the mean of its divisors is an integer number (11562742184).

Almost surely, 2^39643687484 is an apocalyptic number.

It is an amenable number.

39643687484 is a deficient number, since it is larger than the sum of its proper divisors (29732765620).

39643687484 is a wasteful number, since it uses less digits than its factorization.

39643687484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9910921875 (or 9910921873 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 62.

The spelling of 39643687484 in words is "thirty-nine billion, six hundred forty-three million, six hundred eighty-seven thousand, four hundred eighty-four".