115921877 has 4 divisors (see below), whose sum is σ = 117224460. Its totient is φ = 114619296.

The previous prime is 115921873. The next prime is 115921879. The reversal of 115921877 is 778129511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46799281 + 69122596 = 6841^2 + 8314^2 .

It is a cyclic number.

It is not a de Polignac number, because 115921877 - 2² = 115921873 is a prime.

It is a super-3 number, since 3×115921877³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115921873) 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, 651158 + ... + 651335.

It is an arithmetic number, because the mean of its divisors is an integer number (29306115).

Almost surely, 2^115921877 is an apocalyptic number.

It is an amenable number.

115921877 is a deficient number, since it is larger than the sum of its proper divisors (1302583).

115921877 is an equidigital number, since it uses as much as digits as its factorization.

115921877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302582.

The product of its digits is 35280, while the sum is 41.

The square root of 115921877 is about 10766.7022342034. The cubic root of 115921877 is about 487.5903870975.

The spelling of 115921877 in words is "one hundred fifteen million, nine hundred twenty-one thousand, eight hundred seventy-seven".