111743939 has 2 divisors, whose sum is σ = 111743940. Its totient is φ = 111743938.

The previous prime is 111743927. The next prime is 111743953. The reversal of 111743939 is 939347111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111743939 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_6397229 and since 111743939 and 6397229 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (111743969) 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, 55871969 + 55871970.

It is an arithmetic number, because the mean of its divisors is an integer number (55871970).

Almost surely, 2^111743939 is an apocalyptic number.

111743939 is a deficient number, since it is larger than the sum of its proper divisors (1).

111743939 is an equidigital number, since it uses as much as digits as its factorization.

111743939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 111743939 is about 10570.9005765829. The cubic root of 111743939 is about 481.6608252439.

The spelling of 111743939 in words is "one hundred eleven million, seven hundred forty-three thousand, nine hundred thirty-nine".