115668389 has 2 divisors, whose sum is σ = 115668390. Its totient is φ = 115668388.

The previous prime is 115668367. The next prime is 115668439. The reversal of 115668389 is 983866511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83576164 + 32092225 = 9142^2 + 5665^2 .

It is a cyclic number.

It is not a de Polignac number, because 115668389 - 2¹² = 115664293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115668349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57834194 + 57834195.

It is an arithmetic number, because the mean of its divisors is an integer number (57834195).

Almost surely, 2^115668389 is an apocalyptic number.

It is an amenable number.

115668389 is a deficient number, since it is larger than the sum of its proper divisors (1).

115668389 is an equidigital number, since it uses as much as digits as its factorization.

115668389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 115668389 is about 10754.9239420835. The cubic root of 115668389 is about 487.2347208038.

The spelling of 115668389 in words is "one hundred fifteen million, six hundred sixty-eight thousand, three hundred eighty-nine".