111798879 has 8 divisors (see below), whose sum is σ = 149822640. Its totient is φ = 74153856.

The previous prime is 111798877. The next prime is 111798881. The reversal of 111798879 is 978897111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111798877) and next prime (111798881).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111798879 - 2¹ = 111798877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111798871) 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 in 7 ways as a sum of consecutive naturals, for example, 93994 + ... + 95175.

It is an arithmetic number, because the mean of its divisors is an integer number (18727830).

Almost surely, 2^111798879 is an apocalyptic number.

111798879 is a deficient number, since it is larger than the sum of its proper divisors (38023761).

111798879 is a wasteful number, since it uses less digits than its factorization.

111798879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189369.

The product of its digits is 254016, while the sum is 51.

The square root of 111798879 is about 10573.4989005532. The cubic root of 111798879 is about 481.7397500617.

The spelling of 111798879 in words is "one hundred eleven million, seven hundred ninety-eight thousand, eight hundred seventy-nine".