39789704042993 has 8 divisors (see below), whose sum is σ = 40442738124840. Its totient is φ = 39136693956480.

The previous prime is 39789704042983. The next prime is 39789704043017. The reversal of 39789704042993 is 39924040798793.

It can be written as a sum of positive squares in 4 ways, for example, as 2805584800144 + 36984119242849 = 1674988^2 + 6081457^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 39789704042993 - 2³² = 39785409075697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39789704042993.

It is not an unprimeable number, because it can be changed into a prime (39789704042903) 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, 2639858 + ... + 9303131.

It is an arithmetic number, because the mean of its divisors is an integer number (5055342265605).

Almost surely, 2^{39789704042993} is an apocalyptic number.

It is an amenable number.

39789704042993 is a deficient number, since it is larger than the sum of its proper divisors (653034081847).

39789704042993 is a wasteful number, since it uses less digits than its factorization.

39789704042993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11997667.

The product of its (nonzero) digits is 740710656, while the sum is 74.

The spelling of 39789704042993 in words is "thirty-nine trillion, seven hundred eighty-nine billion, seven hundred four million, forty-two thousand, nine hundred ninety-three".