4213609 has 2 divisors, whose sum is σ = 4213610. Its totient is φ = 4213608.

The previous prime is 4213591. The next prime is 4213639. The reversal of 4213609 is 9063124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 1272384 = 1715^2 + 1128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4213609 is a prime.

It is not a weakly prime, because it can be changed into another prime (4213639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2106804 + 2106805.

It is an arithmetic number, because the mean of its divisors is an integer number (2106805).

Almost surely, 2^4213609 is an apocalyptic number.

It is an amenable number.

4213609 is a deficient number, since it is larger than the sum of its proper divisors (1).

4213609 is an equidigital number, since it uses as much as digits as its factorization.

4213609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 4213609 is about 2052.7077239588. The cubic root of 4213609 is about 161.5169398213.

The spelling of 4213609 in words is "four million, two hundred thirteen thousand, six hundred nine".