115396777 has 4 divisors (see below), whose sum is σ = 116693460. Its totient is φ = 114100096.

The previous prime is 115396769. The next prime is 115396789. The reversal of 115396777 is 777693511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 777693511 = 7 ⋅111099073.

It can be written as a sum of positive squares in 2 ways, for example, as 10621081 + 104775696 = 3259^2 + 10236^2 .

It is a cyclic number.

It is not a de Polignac number, because 115396777 - 2³ = 115396769 is a prime.

It is a super-2 number, since 2×115396777² = 26632832283975458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115396577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648208 + ... + 648385.

It is an arithmetic number, because the mean of its divisors is an integer number (29173365).

Almost surely, 2^115396777 is an apocalyptic number.

It is an amenable number.

115396777 is a deficient number, since it is larger than the sum of its proper divisors (1296683).

115396777 is an equidigital number, since it uses as much as digits as its factorization.

115396777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296682.

The product of its digits is 277830, while the sum is 46.

The square root of 115396777 is about 10742.2891880642. The cubic root of 115396777 is about 486.8530477605.

The spelling of 115396777 in words is "one hundred fifteen million, three hundred ninety-six thousand, seven hundred seventy-seven".