39802847993 has 2 divisors, whose sum is σ = 39802847994. Its totient is φ = 39802847992.

The previous prime is 39802847957. The next prime is 39802848023. The reversal of 39802847993 is 39974820893.

39802847993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39333995584 + 468852409 = 198328^2 + 21653^2 .

It is a cyclic number.

It is not a de Polignac number, because 39802847993 - 2²² = 39798653689 is a prime.

It is not a weakly prime, because it can be changed into another prime (39802847923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19901423996 + 19901423997.

It is an arithmetic number, because the mean of its divisors is an integer number (19901423997).

Almost surely, 2^39802847993 is an apocalyptic number.

It is an amenable number.

39802847993 is a deficient number, since it is larger than the sum of its proper divisors (1).

39802847993 is an equidigital number, since it uses as much as digits as its factorization.

39802847993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 39802847993 in words is "thirty-nine billion, eight hundred two million, eight hundred forty-seven thousand, nine hundred ninety-three".