799636993 has 2 divisors, whose sum is σ = 799636994. Its totient is φ = 799636992.

The previous prime is 799636927. The next prime is 799636997. The reversal of 799636993 is 399636997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738045889 + 61591104 = 27167^2 + 7848^2 .

It is an emirp because it is prime and its reverse (399636997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 799636993 - 2¹³ = 799628801 is a prime.

It is not a weakly prime, because it can be changed into another prime (799636997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399818496 + 399818497.

It is an arithmetic number, because the mean of its divisors is an integer number (399818497).

Almost surely, 2^799636993 is an apocalyptic number.

It is an amenable number.

799636993 is a deficient number, since it is larger than the sum of its proper divisors (1).

799636993 is an equidigital number, since it uses as much as digits as its factorization.

799636993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14880348, while the sum is 61.

The square root of 799636993 is about 28277.8534015579. The cubic root of 799636993 is about 928.1773347099.

The spelling of 799636993 in words is "seven hundred ninety-nine million, six hundred thirty-six thousand, nine hundred ninety-three".