39641947028 has 24 divisors (see below), whose sum is σ = 69605367552. Its totient is φ = 19754802144.

The previous prime is 39641946979. The next prime is 39641947043. The reversal of 39641947028 is 82074914693.

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, 1612001 + ... + 1636407.

It is an arithmetic number, because the mean of its divisors is an integer number (2900223648).

Almost surely, 2^39641947028 is an apocalyptic number.

It is an amenable number.

39641947028 is a deficient number, since it is larger than the sum of its proper divisors (29963420524).

39641947028 is a wasteful number, since it uses less digits than its factorization.

39641947028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25751 (or 25749 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 39641947028 in words is "thirty-nine billion, six hundred forty-one million, nine hundred forty-seven thousand, twenty-eight".