111238849 has 2 divisors, whose sum is σ = 111238850. Its totient is φ = 111238848.

The previous prime is 111238847. The next prime is 111238859. The reversal of 111238849 is 948832111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87890625 + 23348224 = 9375^2 + 4832^2 .

It is an emirp because it is prime and its reverse (948832111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111238849 - 2¹ = 111238847 is a prime.

Together with 111238847, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111238843) 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, 55619424 + 55619425.

It is an arithmetic number, because the mean of its divisors is an integer number (55619425).

Almost surely, 2^111238849 is an apocalyptic number.

It is an amenable number.

111238849 is a deficient number, since it is larger than the sum of its proper divisors (1).

111238849 is an equidigital number, since it uses as much as digits as its factorization.

111238849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The square root of 111238849 is about 10546.9829335218. The cubic root of 111238849 is about 480.9340161301.

The spelling of 111238849 in words is "one hundred eleven million, two hundred thirty-eight thousand, eight hundred forty-nine".