39789249640 has 64 divisors (see below), whose sum is σ = 102340402560. Its totient is φ = 13638670080.

The previous prime is 39789249637. The next prime is 39789249659. The reversal of 39789249640 is 4694298793.

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 15 ways as a sum of consecutive naturals, for example, 1298334 + ... + 1328626.

It is an arithmetic number, because the mean of its divisors is an integer number (1599068790).

Almost surely, 2^39789249640 is an apocalyptic number.

It is an amenable number.

39789249640 is an abundant number, since it is smaller than the sum of its proper divisors (62551152920).

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

39789249640 is a wasteful number, since it uses less digits than its factorization.

39789249640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35002 (or 34998 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 39789249640 in words is "thirty-nine billion, seven hundred eighty-nine million, two hundred forty-nine thousand, six hundred forty".