111438917 has 2 divisors, whose sum is σ = 111438918. Its totient is φ = 111438916.

The previous prime is 111438911. The next prime is 111438937. The reversal of 111438917 is 719834111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96314596 + 15124321 = 9814^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 111438917 - 2⁶ = 111438853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111438911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55719458 + 55719459.

It is an arithmetic number, because the mean of its divisors is an integer number (55719459).

Almost surely, 2^111438917 is an apocalyptic number.

It is an amenable number.

111438917 is a deficient number, since it is larger than the sum of its proper divisors (1).

111438917 is an equidigital number, since it uses as much as digits as its factorization.

111438917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 35.

The square root of 111438917 is about 10556.4632808531. The cubic root of 111438917 is about 481.2221704939. Note that the first 3 decimals are identical.

The spelling of 111438917 in words is "one hundred eleven million, four hundred thirty-eight thousand, nine hundred seventeen".