111440039 has 2 divisors, whose sum is σ = 111440040. Its totient is φ = 111440038.

The previous prime is 111440029. The next prime is 111440057. The reversal of 111440039 is 930044111.

It is a weak prime.

It is an emirp because it is prime and its reverse (930044111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111440039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111439996 and 111440023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111440029) 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, 55720019 + 55720020.

It is an arithmetic number, because the mean of its divisors is an integer number (55720020).

Almost surely, 2^111440039 is an apocalyptic number.

111440039 is a deficient number, since it is larger than the sum of its proper divisors (1).

111440039 is an equidigital number, since it uses as much as digits as its factorization.

111440039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 111440039 is about 10556.5164235178. The cubic root of 111440039 is about 481.2237855176.

The spelling of 111440039 in words is "one hundred eleven million, four hundred forty thousand, thirty-nine".