3240040393 has 2 divisors, whose sum is σ = 3240040394. Its totient is φ = 3240040392.

The previous prime is 3240040343. The next prime is 3240040511. The reversal of 3240040393 is 3930400423.

3240040393 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., 3074480704 + 165559689 = 55448^2 + 12867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3240040393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3240040333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620020196 + 1620020197.

It is an arithmetic number, because the mean of its divisors is an integer number (1620020197).

Almost surely, 2^3240040393 is an apocalyptic number.

It is an amenable number.

3240040393 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240040393 is an equidigital number, since it uses as much as digits as its factorization.

3240040393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 3240040393 is about 56921.3526982625. The cubic root of 3240040393 is about 1479.7333938137.

The spelling of 3240040393 in words is "three billion, two hundred forty million, forty thousand, three hundred ninety-three".