799717973 has 2 divisors, whose sum is σ = 799717974. Its totient is φ = 799717972.

The previous prime is 799717969. The next prime is 799718033. The reversal of 799717973 is 379717997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 798514564 + 1203409 = 28258^2 + 1097^2 .

It is an emirp because it is prime and its reverse (379717997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 799717973 - 2² = 799717969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799717273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399858986 + 399858987.

It is an arithmetic number, because the mean of its divisors is an integer number (399858987).

Almost surely, 2^799717973 is an apocalyptic number.

It is an amenable number.

799717973 is a deficient number, since it is larger than the sum of its proper divisors (1).

799717973 is an equidigital number, since it uses as much as digits as its factorization.

799717973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5250987, while the sum is 59.

The square root of 799717973 is about 28279.2852278837. The cubic root of 799717973 is about 928.2086661198.

The spelling of 799717973 in words is "seven hundred ninety-nine million, seven hundred seventeen thousand, nine hundred seventy-three".