540368393 has 2 divisors, whose sum is σ = 540368394. Its totient is φ = 540368392.

The previous prime is 540368329. The next prime is 540368431. The reversal of 540368393 is 393863045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504811024 + 35557369 = 22468^2 + 5963^2 .

It is a cyclic number.

It is not a de Polignac number, because 540368393 - 2⁶ = 540368329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540368393.

It is not a weakly prime, because it can be changed into another prime (540368093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270184196 + 270184197.

It is an arithmetic number, because the mean of its divisors is an integer number (270184197).

Almost surely, 2^540368393 is an apocalyptic number.

It is an amenable number.

540368393 is a deficient number, since it is larger than the sum of its proper divisors (1).

540368393 is an equidigital number, since it uses as much as digits as its factorization.

540368393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 540368393 is about 23245.8252811123. The cubic root of 540368393 is about 814.5104229671.

The spelling of 540368393 in words is "five hundred forty million, three hundred sixty-eight thousand, three hundred ninety-three".