115671779 has 4 divisors (see below), whose sum is σ = 116340576. Its totient is φ = 115002984.

The previous prime is 115671739. The next prime is 115671797. The reversal of 115671779 is 977176511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977176511 = 743 ⋅1315177.

It is a cyclic number.

It is not a de Polignac number, because 115671779 - 2¹⁶ = 115606243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115671719) 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, 334139 + ... + 334484.

It is an arithmetic number, because the mean of its divisors is an integer number (29085144).

Almost surely, 2^115671779 is an apocalyptic number.

115671779 is a deficient number, since it is larger than the sum of its proper divisors (668797).

115671779 is an equidigital number, since it uses as much as digits as its factorization.

115671779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668796.

The product of its digits is 92610, while the sum is 44.

The square root of 115671779 is about 10755.0815431590. The cubic root of 115671779 is about 487.2394807029.

The spelling of 115671779 in words is "one hundred fifteen million, six hundred seventy-one thousand, seven hundred seventy-nine".