2402209 has 2 divisors, whose sum is σ = 2402210. Its totient is φ = 2402208.

The previous prime is 2402203. The next prime is 2402233. The reversal of 2402209 is 9022042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2310400 + 91809 = 1520^2 + 303^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402209 - 2³ = 2402201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2402201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201104 + 1201105.

It is an arithmetic number, because the mean of its divisors is an integer number (1201105).

2^2402209 is an apocalyptic number.

It is an amenable number.

2402209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402209 is an equidigital number, since it uses as much as digits as its factorization.

2402209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2402209 is about 1549.9061261896. The cubic root of 2402209 is about 133.9276545698.

The spelling of 2402209 in words is "two million, four hundred two thousand, two hundred nine".