2240839 has 2 divisors, whose sum is σ = 2240840. Its totient is φ = 2240838.

The previous prime is 2240837. The next prime is 2240851. The reversal of 2240839 is 9380422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2240839 - 2¹ = 2240837 is a prime.

Together with 2240837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2240837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120419 + 1120420.

It is an arithmetic number, because the mean of its divisors is an integer number (1120420).

2^2240839 is an apocalyptic number.

2240839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240839 is an equidigital number, since it uses as much as digits as its factorization.

2240839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2240839 is about 1496.9432186960. The cubic root of 2240839 is about 130.8589862293.

The spelling of 2240839 in words is "two million, two hundred forty thousand, eight hundred thirty-nine".