118407689 has 2 divisors, whose sum is σ = 118407690. Its totient is φ = 118407688.

The previous prime is 118407683. The next prime is 118407697. The reversal of 118407689 is 986704811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116208400 + 2199289 = 10780^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 118407689 - 2⁸ = 118407433 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 (118407683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59203844 + 59203845.

It is an arithmetic number, because the mean of its divisors is an integer number (59203845).

Almost surely, 2^118407689 is an apocalyptic number.

It is an amenable number.

118407689 is a deficient number, since it is larger than the sum of its proper divisors (1).

118407689 is an equidigital number, since it uses as much as digits as its factorization.

118407689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 118407689 is about 10881.5297178292. The cubic root of 118407689 is about 491.0510397786.

The spelling of 118407689 in words is "one hundred eighteen million, four hundred seven thousand, six hundred eighty-nine".