39945039123 has 8 divisors (see below), whose sum is σ = 58101875136. Its totient is φ = 24209114600.

The previous prime is 39945039091. The next prime is 39945039149. The reversal of 39945039123 is 32193054993.

39945039123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 39945039123 - 2⁵ = 39945039091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39945039163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605227833 + ... + 605227898.

It is an arithmetic number, because the mean of its divisors is an integer number (7262734392).

Almost surely, 2^39945039123 is an apocalyptic number.

39945039123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

39945039123 is a deficient number, since it is larger than the sum of its proper divisors (18156836013).

39945039123 is a wasteful number, since it uses less digits than its factorization.

39945039123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210455745.

The product of its (nonzero) digits is 787320, while the sum is 48.

The spelling of 39945039123 in words is "thirty-nine billion, nine hundred forty-five million, thirty-nine thousand, one hundred twenty-three".