799817 has 2 divisors, whose sum is σ = 799818. Its totient is φ = 799816.

The previous prime is 799807. The next prime is 799837. The reversal of 799817 is 718997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 732736 + 67081 = 856^2 + 259^2 .

It is a cyclic number.

It is not a de Polignac number, because 799817 - 2⁴ = 799801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (799807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399908 + 399909.

It is an arithmetic number, because the mean of its divisors is an integer number (399909).

2⁷⁹⁹⁸¹⁷ is an apocalyptic number.

It is an amenable number.

799817 is a deficient number, since it is larger than the sum of its proper divisors (1).

799817 is an equidigital number, since it uses as much as digits as its factorization.

799817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 41.

The square root of 799817 is about 894.3248850390. The cubic root of 799817 is about 92.8246977095.

The spelling of 799817 in words is "seven hundred ninety-nine thousand, eight hundred seventeen".