9993794869 has 2 divisors, whose sum is σ = 9993794870. Its totient is φ = 9993794868.

The previous prime is 9993794843. The next prime is 9993794891. The reversal of 9993794869 is 9684973999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5812232644 + 4181562225 = 76238^2 + 64665^2 .

It is an emirp because it is prime and its reverse (9684973999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9993794869 is a prime.

It is a super-2 number, since 2×9993794869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9993794809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996897434 + 4996897435.

It is an arithmetic number, because the mean of its divisors is an integer number (4996897435).

Almost surely, 2^9993794869 is an apocalyptic number.

It is an amenable number.

9993794869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993794869 is an equidigital number, since it uses as much as digits as its factorization.

9993794869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238085568, while the sum is 73.

The square root of 9993794869 is about 99968.9695305498. The cubic root of 9993794869 is about 2153.9889795133.

The spelling of 9993794869 in words is "nine billion, nine hundred ninety-three million, seven hundred ninety-four thousand, eight hundred sixty-nine".