265391393 has 2 divisors, whose sum is σ = 265391394. Its totient is φ = 265391392.

The previous prime is 265391389. The next prime is 265391429. The reversal of 265391393 is 393193562.

265391393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255456289 + 9935104 = 15983^2 + 3152^2 .

It is a cyclic number.

It is not a de Polignac number, because 265391393 - 2² = 265391389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265391393.

It is not a weakly prime, because it can be changed into another prime (265391333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132695696 + 132695697.

It is an arithmetic number, because the mean of its divisors is an integer number (132695697).

Almost surely, 2^265391393 is an apocalyptic number.

It is an amenable number.

265391393 is a deficient number, since it is larger than the sum of its proper divisors (1).

265391393 is an equidigital number, since it uses as much as digits as its factorization.

265391393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 41.

The square root of 265391393 is about 16290.8377009901. The cubic root of 265391393 is about 642.6318970989.

The spelling of 265391393 in words is "two hundred sixty-five million, three hundred ninety-one thousand, three hundred ninety-three".