2400709 has 2 divisors, whose sum is σ = 2400710. Its totient is φ = 2400708.

The previous prime is 2400703. The next prime is 2400719. The reversal of 2400709 is 9070042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2184484 + 216225 = 1478^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2400709 - 2⁹ = 2400197 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2400709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2400703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200354 + 1200355.

It is an arithmetic number, because the mean of its divisors is an integer number (1200355).

2^2400709 is an apocalyptic number.

It is an amenable number.

2400709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400709 is an equidigital number, since it uses as much as digits as its factorization.

2400709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 2400709 is about 1549.4221503515. The cubic root of 2400709 is about 133.8997728284.

The spelling of 2400709 in words is "two million, four hundred thousand, seven hundred nine".