804216709 has 2 divisors, whose sum is σ = 804216710. Its totient is φ = 804216708.

The previous prime is 804216701. The next prime is 804216733. The reversal of 804216709 is 907612408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 803722500 + 494209 = 28350^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 804216709 - 2³ = 804216701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804216701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402108354 + 402108355.

It is an arithmetic number, because the mean of its divisors is an integer number (402108355).

Almost surely, 2^804216709 is an apocalyptic number.

It is an amenable number.

804216709 is a deficient number, since it is larger than the sum of its proper divisors (1).

804216709 is an equidigital number, since it uses as much as digits as its factorization.

804216709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 804216709 is about 28358.7148686255. The cubic root of 804216709 is about 929.9459285632.

The spelling of 804216709 in words is "eight hundred four million, two hundred sixteen thousand, seven hundred nine".