111440029 has 2 divisors, whose sum is σ = 111440030. Its totient is φ = 111440028.

The previous prime is 111440027. The next prime is 111440039. The reversal of 111440029 is 920044111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77915929 + 33524100 = 8827^2 + 5790^2 .

It is a cyclic number.

It is not a de Polignac number, because 111440029 - 2¹ = 111440027 is a prime.

Together with 111440027, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111439991 and 111440009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111440027) 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, 55720014 + 55720015.

It is an arithmetic number, because the mean of its divisors is an integer number (55720015).

Almost surely, 2^111440029 is an apocalyptic number.

It is an amenable number.

111440029 is a deficient number, since it is larger than the sum of its proper divisors (1).

111440029 is an equidigital number, since it uses as much as digits as its factorization.

111440029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 111440029 is about 10556.5159498766. The cubic root of 111440029 is about 481.2237711235.

The spelling of 111440029 in words is "one hundred eleven million, four hundred forty thousand, twenty-nine".