111959893 has 2 divisors, whose sum is σ = 111959894. Its totient is φ = 111959892.

The previous prime is 111959873. The next prime is 111959899. The reversal of 111959893 is 398959111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100140049 + 11819844 = 10007^2 + 3438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111959893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111959899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55979946 + 55979947.

It is an arithmetic number, because the mean of its divisors is an integer number (55979947).

Almost surely, 2^111959893 is an apocalyptic number.

It is an amenable number.

111959893 is a deficient number, since it is larger than the sum of its proper divisors (1).

111959893 is an equidigital number, since it uses as much as digits as its factorization.

111959893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 46.

The square root of 111959893 is about 10581.1101969500. The cubic root of 111959893 is about 481.9709081229.

The spelling of 111959893 in words is "one hundred eleven million, nine hundred fifty-nine thousand, eight hundred ninety-three".