119309609 has 2 divisors, whose sum is σ = 119309610. Its totient is φ = 119309608.

The previous prime is 119309591. The next prime is 119309633. The reversal of 119309609 is 906903911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60403984 + 58905625 = 7772^2 + 7675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-119309609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (119309639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59654804 + 59654805.

It is an arithmetic number, because the mean of its divisors is an integer number (59654805).

Almost surely, 2^119309609 is an apocalyptic number.

It is an amenable number.

119309609 is a deficient number, since it is larger than the sum of its proper divisors (1).

119309609 is an equidigital number, since it uses as much as digits as its factorization.

119309609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 119309609 is about 10922.8938015528. The cubic root of 119309609 is about 492.2946779994.

The spelling of 119309609 in words is "one hundred nineteen million, three hundred nine thousand, six hundred nine".