39938288894 has 12 divisors (see below), whose sum is σ = 68466919992. Its totient is φ = 17116089060.

The previous prime is 39938288833. The next prime is 39938288927. The reversal of 39938288894 is 49888283993.

It is a Curzon number.

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 in 5 ways as a sum of consecutive naturals, for example, 721049 + ... + 774459.

It is an arithmetic number, because the mean of its divisors is an integer number (5705576666).

Almost surely, 2^39938288894 is an apocalyptic number.

39938288894 is a deficient number, since it is larger than the sum of its proper divisors (28528631098).

39938288894 is an frugal number, since it uses more digits than its factorization.

39938288894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106831 (or 53420 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 71.

The spelling of 39938288894 in words is "thirty-nine billion, nine hundred thirty-eight million, two hundred eighty-eight thousand, eight hundred ninety-four".