111844879 has 2 divisors, whose sum is σ = 111844880. Its totient is φ = 111844878.

The previous prime is 111844871. The next prime is 111844897. The reversal of 111844879 is 978448111.

It is a happy number.

Together with next prime (111844897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111844879 - 2³ = 111844871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111844871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55922439 + 55922440.

It is an arithmetic number, because the mean of its divisors is an integer number (55922440).

Almost surely, 2^111844879 is an apocalyptic number.

111844879 is a deficient number, since it is larger than the sum of its proper divisors (1).

111844879 is an equidigital number, since it uses as much as digits as its factorization.

111844879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 43.

The square root of 111844879 is about 10575.6739265165. The cubic root of 111844879 is about 481.8058121133.

The spelling of 111844879 in words is "one hundred eleven million, eight hundred forty-four thousand, eight hundred seventy-nine".