111976873 has 4 divisors (see below), whose sum is σ = 112423248. Its totient is φ = 111530500.

The previous prime is 111976847. The next prime is 111976883. The reversal of 111976873 is 378679111.

It is a happy number.

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: 378679111 = 3323 ⋅113957.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111976873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111976883) 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 in 3 ways as a sum of consecutive naturals, for example, 222811 + ... + 223312.

It is an arithmetic number, because the mean of its divisors is an integer number (28105812).

Almost surely, 2^111976873 is an apocalyptic number.

It is an amenable number.

111976873 is a deficient number, since it is larger than the sum of its proper divisors (446375).

111976873 is an equidigital number, since it uses as much as digits as its factorization.

111976873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446374.

The product of its digits is 63504, while the sum is 43.

The square root of 111976873 is about 10581.9125398011. The cubic root of 111976873 is about 481.9952723606.

The spelling of 111976873 in words is "one hundred eleven million, nine hundred seventy-six thousand, eight hundred seventy-three".