111913729 has 2 divisors, whose sum is σ = 111913730. Its totient is φ = 111913728.

The previous prime is 111913709. The next prime is 111913733. The reversal of 111913729 is 927319111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103063104 + 8850625 = 10152^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 111913729 - 2²⁵ = 78359297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111913694 and 111913703.

It is not a weakly prime, because it can be changed into another prime (111913709) 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, 55956864 + 55956865.

It is an arithmetic number, because the mean of its divisors is an integer number (55956865).

Almost surely, 2^111913729 is an apocalyptic number.

It is an amenable number.

111913729 is a deficient number, since it is larger than the sum of its proper divisors (1).

111913729 is an equidigital number, since it uses as much as digits as its factorization.

111913729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 34.

The square root of 111913729 is about 10578.9285374276. The cubic root of 111913729 is about 481.9046559346.

The spelling of 111913729 in words is "one hundred eleven million, nine hundred thirteen thousand, seven hundred twenty-nine".