2443409 has 2 divisors, whose sum is σ = 2443410. Its totient is φ = 2443408.

The previous prime is 2443403. The next prime is 2443421. The reversal of 2443409 is 9043442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2190400 + 253009 = 1480^2 + 503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2443409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2443403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1221704 + 1221705.

It is an arithmetic number, because the mean of its divisors is an integer number (1221705).

2^2443409 is an apocalyptic number.

It is an amenable number.

2443409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2443409 is an equidigital number, since it uses as much as digits as its factorization.

2443409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2443409 is about 1563.1407486212. The cubic root of 2443409 is about 134.6889776397.

The spelling of 2443409 in words is "two million, four hundred forty-three thousand, four hundred nine".