119809 has 2 divisors, whose sum is σ = 119810. Its totient is φ = 119808.

The previous prime is 119797. The next prime is 119813. The reversal of 119809 is 908911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119025 + 784 = 345^2 + 28^2 .

It is an emirp because it is prime and its reverse (908911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 119809 - 2⁹ = 119297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (119839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59904 + 59905.

It is an arithmetic number, because the mean of its divisors is an integer number (59905).

It is a Proth number, since it is equal to 117 ⋅ 2¹⁰ + 1 and 117 < 2¹⁰.

2¹¹⁹⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

119809 is a deficient number, since it is larger than the sum of its proper divisors (1).

119809 is an equidigital number, since it uses as much as digits as its factorization.

119809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 119809 is about 346.1343669733. The cubic root of 119809 is about 49.2980583397.

The spelling of 119809 in words is "one hundred nineteen thousand, eight hundred nine".