118908689 has 4 divisors (see below), whose sum is σ = 124078656. Its totient is φ = 113738724.

The previous prime is 118908683. The next prime is 118908701. The reversal of 118908689 is 986809811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118908689 - 2¹² = 118904593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118908683) 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, 2584949 + ... + 2584994.

It is an arithmetic number, because the mean of its divisors is an integer number (31019664).

Almost surely, 2^118908689 is an apocalyptic number.

It is an amenable number.

118908689 is a deficient number, since it is larger than the sum of its proper divisors (5169967).

118908689 is an equidigital number, since it uses as much as digits as its factorization.

118908689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169966.

The product of its (nonzero) digits is 248832, while the sum is 50.

The square root of 118908689 is about 10904.5260786519. The cubic root of 118908689 is about 491.7426345254.

The spelling of 118908689 in words is "one hundred eighteen million, nine hundred eight thousand, six hundred eighty-nine".