116908289 has 2 divisors, whose sum is σ = 116908290. Its totient is φ = 116908288.

The previous prime is 116908283. The next prime is 116908291. The reversal of 116908289 is 982809611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64128064 + 52780225 = 8008^2 + 7265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116908289 is a prime.

Together with 116908291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (116908283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58454144 + 58454145.

It is an arithmetic number, because the mean of its divisors is an integer number (58454145).

Almost surely, 2^116908289 is an apocalyptic number.

It is an amenable number.

116908289 is a deficient number, since it is larger than the sum of its proper divisors (1).

116908289 is an equidigital number, since it uses as much as digits as its factorization.

116908289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 116908289 is about 10812.4136528344. The cubic root of 116908289 is about 488.9694975000.

The spelling of 116908289 in words is "one hundred sixteen million, nine hundred eight thousand, two hundred eighty-nine".