118977 has 4 divisors (see below), whose sum is σ = 158640. Its totient is φ = 79316.

The previous prime is 118973. The next prime is 119027. The reversal of 118977 is 779811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 779811 = 3 ⋅259937.

It is a cyclic number.

It is not a de Polignac number, because 118977 - 2² = 118973 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (118973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19827 + ... + 19832.

It is an arithmetic number, because the mean of its divisors is an integer number (39660).

2¹¹⁸⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

118977 is a deficient number, since it is larger than the sum of its proper divisors (39663).

118977 is an equidigital number, since it uses as much as digits as its factorization.

118977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39662.

The product of its digits is 3528, while the sum is 33.

The square root of 118977 is about 344.9304277677. The cubic root of 118977 is about 49.1836782399.

The spelling of 118977 in words is "one hundred eighteen thousand, nine hundred seventy-seven".