2240857393 has 2 divisors, whose sum is σ = 2240857394. Its totient is φ = 2240857392.

The previous prime is 2240857309. The next prime is 2240857403. The reversal of 2240857393 is 3937580422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1894599729 + 346257664 = 43527^2 + 18608^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240857393 - 2⁹ = 2240856881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2240857793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120428696 + 1120428697.

It is an arithmetic number, because the mean of its divisors is an integer number (1120428697).

Almost surely, 2^2240857393 is an apocalyptic number.

It is an amenable number.

2240857393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240857393 is an equidigital number, since it uses as much as digits as its factorization.

2240857393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 2240857393 is about 47337.6952649788. The cubic root of 2240857393 is about 1308.5934426231.

The spelling of 2240857393 in words is "two billion, two hundred forty million, eight hundred fifty-seven thousand, three hundred ninety-three".