797009 has 2 divisors, whose sum is σ = 797010. Its totient is φ = 797008.

The previous prime is 797003. The next prime is 797021. The reversal of 797009 is 900797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 124609 = 820^2 + 353^2 .

It is an emirp because it is prime and its reverse (900797) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-797009 is a prime.

It is not a weakly prime, because it can be changed into another prime (797003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398504 + 398505.

It is an arithmetic number, because the mean of its divisors is an integer number (398505).

2⁷⁹⁷⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

797009 is a deficient number, since it is larger than the sum of its proper divisors (1).

797009 is an equidigital number, since it uses as much as digits as its factorization.

797009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 32.

The square root of 797009 is about 892.7536054254. The cubic root of 797009 is about 92.7159405897.

The spelling of 797009 in words is "seven hundred ninety-seven thousand, nine".