2116393 has 2 divisors, whose sum is σ = 2116394. Its totient is φ = 2116392.

The previous prime is 2116357. The next prime is 2116397. The reversal of 2116393 is 3936112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111209 + 5184 = 1453^2 + 72^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2116397) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058196 + 1058197.

It is an arithmetic number, because the mean of its divisors is an integer number (1058197).

2^2116393 is an apocalyptic number.

It is an amenable number.

2116393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116393 is an equidigital number, since it uses as much as digits as its factorization.

2116393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 25.

The square root of 2116393 is about 1454.7828016580. The cubic root of 2116393 is about 128.3902680227.

The spelling of 2116393 in words is "two million, one hundred sixteen thousand, three hundred ninety-three".