115939777 has 2 divisors, whose sum is σ = 115939778. Its totient is φ = 115939776.

The previous prime is 115939771. The next prime is 115939793. The reversal of 115939777 is 777939511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113976976 + 1962801 = 10676^2 + 1401^2 .

It is a cyclic number.

It is not a de Polignac number, because 115939777 - 2¹¹ = 115937729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115939777.

It is not a weakly prime, because it can be changed into another prime (115939771) 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 as a sum of consecutive naturals, namely, 57969888 + 57969889.

It is an arithmetic number, because the mean of its divisors is an integer number (57969889).

Almost surely, 2^115939777 is an apocalyptic number.

It is an amenable number.

115939777 is a deficient number, since it is larger than the sum of its proper divisors (1).

115939777 is an equidigital number, since it uses as much as digits as its factorization.

115939777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 416745, while the sum is 49.

The square root of 115939777 is about 10767.5334687198. The cubic root of 115939777 is about 487.6154827882.

The spelling of 115939777 in words is "one hundred fifteen million, nine hundred thirty-nine thousand, seven hundred seventy-seven".