2240789 has 2 divisors, whose sum is σ = 2240790. Its totient is φ = 2240788.

The previous prime is 2240779. The next prime is 2240807. The reversal of 2240789 is 9870422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1868689 + 372100 = 1367^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240789 - 2⁸ = 2240533 is a prime.

It is a super-2 number, since 2×2240789² = 10042270685042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2240759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120394 + 1120395.

It is an arithmetic number, because the mean of its divisors is an integer number (1120395).

2^2240789 is an apocalyptic number.

It is an amenable number.

2240789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240789 is an equidigital number, since it uses as much as digits as its factorization.

2240789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2240789 is about 1496.9265179026. The cubic root of 2240789 is about 130.8580129335.

The spelling of 2240789 in words is "two million, two hundred forty thousand, seven hundred eighty-nine".