809119117 has 2 divisors, whose sum is σ = 809119118. Its totient is φ = 809119116.

The previous prime is 809119081. The next prime is 809119153. The reversal of 809119117 is 711911908.

It is a balanced prime because it is at equal distance from previous prime (809119081) and next prime (809119153).

It can be written as a sum of positive squares in only one way, i.e., 600201001 + 208918116 = 24499^2 + 14454^2 .

It is a cyclic number.

It is not a de Polignac number, because 809119117 - 2¹⁵ = 809086349 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 (809119187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404559558 + 404559559.

It is an arithmetic number, because the mean of its divisors is an integer number (404559559).

Almost surely, 2^809119117 is an apocalyptic number.

It is an amenable number.

809119117 is a deficient number, since it is larger than the sum of its proper divisors (1).

809119117 is an equidigital number, since it uses as much as digits as its factorization.

809119117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 37.

The square root of 809119117 is about 28445.0191949311. The cubic root of 809119117 is about 931.8317146130.

The spelling of 809119117 in words is "eight hundred nine million, one hundred nineteen thousand, one hundred seventeen".