39839659944943 has 8 divisors (see below), whose sum is σ = 41571955611648. Its totient is φ = 38107375656504.

The previous prime is 39839659944901. The next prime is 39839659944949. The reversal of 39839659944943 is 34944995693893.

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

It is not a de Polignac number, because 39839659944943 - 2²¹ = 39839657847791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39839659944949) 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, 4740846 + ... + 10107172.

It is an arithmetic number, because the mean of its divisors is an integer number (5196494451456).

Almost surely, 2^{39839659944943} is an apocalyptic number.

39839659944943 is a deficient number, since it is larger than the sum of its proper divisors (1732295666705).

39839659944943 is a wasteful number, since it uses less digits than its factorization.

39839659944943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689133.

The product of its digits is 24488801280, while the sum is 85.

The spelling of 39839659944943 in words is "thirty-nine trillion, eight hundred thirty-nine billion, six hundred fifty-nine million, nine hundred forty-four thousand, nine hundred forty-three".