115777789 has 2 divisors, whose sum is σ = 115777790. Its totient is φ = 115777788.

The previous prime is 115777771. The next prime is 115777807. The reversal of 115777789 is 987777511.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (115777771) and next prime (115777807).

It can be written as a sum of positive squares in only one way, i.e., 111133764 + 4644025 = 10542^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 115777789 - 2⁵ = 115777757 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115775789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57888894 + 57888895.

It is an arithmetic number, because the mean of its divisors is an integer number (57888895).

Almost surely, 2^115777789 is an apocalyptic number.

It is an amenable number.

115777789 is a deficient number, since it is larger than the sum of its proper divisors (1).

115777789 is an equidigital number, since it uses as much as digits as its factorization.

115777789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864360, while the sum is 52.

The square root of 115777789 is about 10760.0087825243. The cubic root of 115777789 is about 487.3882824432.

The spelling of 115777789 in words is "one hundred fifteen million, seven hundred seventy-seven thousand, seven hundred eighty-nine".