4198709 has 2 divisors, whose sum is σ = 4198710. Its totient is φ = 4198708.

The previous prime is 4198703. The next prime is 4198729. The reversal of 4198709 is 9078914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3912484 + 286225 = 1978^2 + 535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4198709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4198703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2099354 + 2099355.

It is an arithmetic number, because the mean of its divisors is an integer number (2099355).

Almost surely, 2^4198709 is an apocalyptic number.

It is an amenable number.

4198709 is a deficient number, since it is larger than the sum of its proper divisors (1).

4198709 is an equidigital number, since it uses as much as digits as its factorization.

4198709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 4198709 is about 2049.0751572356. The cubic root of 4198709 is about 161.3263316672.

The spelling of 4198709 in words is "four million, one hundred ninety-eight thousand, seven hundred nine".