116842009 has 2 divisors, whose sum is σ = 116842010. Its totient is φ = 116842008.

The previous prime is 116841997. The next prime is 116842013. The reversal of 116842009 is 900248611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100560784 + 16281225 = 10028^2 + 4035^2 .

It is an emirp because it is prime and its reverse (900248611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116842009 is a prime.

It is not a weakly prime, because it can be changed into another prime (116842049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58421004 + 58421005.

It is an arithmetic number, because the mean of its divisors is an integer number (58421005).

Almost surely, 2^116842009 is an apocalyptic number.

It is an amenable number.

116842009 is a deficient number, since it is larger than the sum of its proper divisors (1).

116842009 is an equidigital number, since it uses as much as digits as its factorization.

116842009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 116842009 is about 10809.3482227191. The cubic root of 116842009 is about 488.8770745557.

The spelling of 116842009 in words is "one hundred sixteen million, eight hundred forty-two thousand, nine".