118117289 has 4 divisors (see below), whose sum is σ = 120053700. Its totient is φ = 116180880.

The previous prime is 118117249. The next prime is 118117297. The reversal of 118117289 is 982711811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4481689 + 113635600 = 2117^2 + 10660^2 .

It is a cyclic number.

It is not a de Polignac number, because 118117289 - 2⁸ = 118117033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118117249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968114 + ... + 968235.

It is an arithmetic number, because the mean of its divisors is an integer number (30013425).

Almost surely, 2^118117289 is an apocalyptic number.

It is an amenable number.

118117289 is a deficient number, since it is larger than the sum of its proper divisors (1936411).

118117289 is an equidigital number, since it uses as much as digits as its factorization.

118117289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936410.

The product of its digits is 8064, while the sum is 38.

The square root of 118117289 is about 10868.1778141508. The cubic root of 118117289 is about 490.6492698124.

The spelling of 118117289 in words is "one hundred eighteen million, one hundred seventeen thousand, two hundred eighty-nine".