1244609 has 2 divisors, whose sum is σ = 1244610. Its totient is φ = 1244608.

The previous prime is 1244603. The next prime is 1244611. The reversal of 1244609 is 9064421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 908209 + 336400 = 953^2 + 580^2 .

It is an emirp because it is prime and its reverse (9064421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244609 - 2²⁰ = 196033 is a prime.

It is a Sophie Germain prime.

Together with 1244611, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1244603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622304 + 622305.

It is an arithmetic number, because the mean of its divisors is an integer number (622305).

2^1244609 is an apocalyptic number.

It is an amenable number.

1244609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244609 is an equidigital number, since it uses as much as digits as its factorization.

1244609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1244609 is about 1115.6204551728. The cubic root of 1244609 is about 107.5666505733.

The spelling of 1244609 in words is "one million, two hundred forty-four thousand, six hundred nine".