115777799 has 4 divisors (see below), whose sum is σ = 115923864. Its totient is φ = 115631736.

The previous prime is 115777789. The next prime is 115777807. The reversal of 115777799 is 997777511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115777799 - 2¹⁶ = 115712263 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 115777799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115777789) 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, 71837 + ... + 73430.

It is an arithmetic number, because the mean of its divisors is an integer number (28980966).

Almost surely, 2^115777799 is an apocalyptic number.

115777799 is a deficient number, since it is larger than the sum of its proper divisors (146065).

115777799 is an equidigital number, since it uses as much as digits as its factorization.

115777799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146064.

The product of its digits is 972405, while the sum is 53.

The square root of 115777799 is about 10760.0092472079. The cubic root of 115777799 is about 487.3882964755.

The spelling of 115777799 in words is "one hundred fifteen million, seven hundred seventy-seven thousand, seven hundred ninety-nine".