39923737138 has 8 divisors (see below), whose sum is σ = 60149419632. Its totient is φ = 19873930596.

The previous prime is 39923737121. The next prime is 39923737163. The reversal of 39923737138 is 83173732993.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 43968420 + ... + 43969327.

It is an arithmetic number, because the mean of its divisors is an integer number (7518677454).

Almost surely, 2^39923737138 is an apocalyptic number.

39923737138 is a deficient number, since it is larger than the sum of its proper divisors (20225682494).

39923737138 is a wasteful number, since it uses less digits than its factorization.

39923737138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87937976.

The product of its digits is 5143824, while the sum is 55.

The spelling of 39923737138 in words is "thirty-nine billion, nine hundred twenty-three million, seven hundred thirty-seven thousand, one hundred thirty-eight".