118993709 has 2 divisors, whose sum is σ = 118993710. Its totient is φ = 118993708.

The previous prime is 118993687. The next prime is 118993747. The reversal of 118993709 is 907399811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116424100 + 2569609 = 10790^2 + 1603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118993709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118993759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59496854 + 59496855.

It is an arithmetic number, because the mean of its divisors is an integer number (59496855).

Almost surely, 2^118993709 is an apocalyptic number.

It is an amenable number.

118993709 is a deficient number, since it is larger than the sum of its proper divisors (1).

118993709 is an equidigital number, since it uses as much as digits as its factorization.

118993709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 118993709 is about 10908.4237633125. The cubic root of 118993709 is about 491.8598056613.

The spelling of 118993709 in words is "one hundred eighteen million, nine hundred ninety-three thousand, seven hundred nine".