111639883 has 2 divisors, whose sum is σ = 111639884. Its totient is φ = 111639882.

The previous prime is 111639851. The next prime is 111639893. The reversal of 111639883 is 388936111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111639883 - 2⁵ = 111639851 is a prime.

It is not a weakly prime, because it can be changed into another prime (111639893) 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, 55819941 + 55819942.

It is an arithmetic number, because the mean of its divisors is an integer number (55819942).

Almost surely, 2^111639883 is an apocalyptic number.

111639883 is a deficient number, since it is larger than the sum of its proper divisors (1).

111639883 is an equidigital number, since it uses as much as digits as its factorization.

111639883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 111639883 is about 10565.9776168606. The cubic root of 111639883 is about 481.5112712293.

The spelling of 111639883 in words is "one hundred eleven million, six hundred thirty-nine thousand, eight hundred eighty-three".