115540393 has 2 divisors, whose sum is σ = 115540394. Its totient is φ = 115540392.

The previous prime is 115540367. The next prime is 115540427. The reversal of 115540393 is 393045511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82500889 + 33039504 = 9083^2 + 5748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115540393 is a prime.

It is not a weakly prime, because it can be changed into another prime (115540333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57770196 + 57770197.

It is an arithmetic number, because the mean of its divisors is an integer number (57770197).

Almost surely, 2^115540393 is an apocalyptic number.

It is an amenable number.

115540393 is a deficient number, since it is larger than the sum of its proper divisors (1).

115540393 is an equidigital number, since it uses as much as digits as its factorization.

115540393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 115540393 is about 10748.9717182622. The cubic root of 115540393 is about 487.0549335298.

The spelling of 115540393 in words is "one hundred fifteen million, five hundred forty thousand, three hundred ninety-three".