111179879 has 2 divisors, whose sum is σ = 111179880. Its totient is φ = 111179878.

The previous prime is 111179869. The next prime is 111179903. The reversal of 111179879 is 978971111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111179879 - 2²⁰ = 110131303 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111179869) 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 as a sum of consecutive naturals, namely, 55589939 + 55589940.

It is an arithmetic number, because the mean of its divisors is an integer number (55589940).

Almost surely, 2^111179879 is an apocalyptic number.

111179879 is a deficient number, since it is larger than the sum of its proper divisors (1).

111179879 is an equidigital number, since it uses as much as digits as its factorization.

111179879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 44.

The square root of 111179879 is about 10544.1869767185. The cubic root of 111179879 is about 480.8490167731.

The spelling of 111179879 in words is "one hundred eleven million, one hundred seventy-nine thousand, eight hundred seventy-nine".