118911979 has 2 divisors, whose sum is σ = 118911980. Its totient is φ = 118911978.

The previous prime is 118911971. The next prime is 118912033. The reversal of 118911979 is 979119811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118911979 - 2³ = 118911971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118911971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59455989 + 59455990.

It is an arithmetic number, because the mean of its divisors is an integer number (59455990).

Almost surely, 2^118911979 is an apocalyptic number.

118911979 is a deficient number, since it is larger than the sum of its proper divisors (1).

118911979 is an equidigital number, since it uses as much as digits as its factorization.

118911979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 46.

The square root of 118911979 is about 10904.6769323992. The cubic root of 118911979 is about 491.7471697094.

The spelling of 118911979 in words is "one hundred eighteen million, nine hundred eleven thousand, nine hundred seventy-nine".