4204309 has 2 divisors, whose sum is σ = 4204310. Its totient is φ = 4204308.

The previous prime is 4204307. The next prime is 4204337. The reversal of 4204309 is 9034024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4100625 + 103684 = 2025^2 + 322^2 .

It is a cyclic number.

It is not a de Polignac number, because 4204309 - 2¹ = 4204307 is a prime.

Together with 4204307, it forms a pair of twin primes.

It is a Chen prime.

4204309 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4204309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4204307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2102154 + 2102155.

It is an arithmetic number, because the mean of its divisors is an integer number (2102155).

Almost surely, 2^4204309 is an apocalyptic number.

It is an amenable number.

4204309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4204309 is an equidigital number, since it uses as much as digits as its factorization.

4204309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4204309 is about 2050.4411720408. The cubic root of 4204309 is about 161.3980224423.

The spelling of 4204309 in words is "four million, two hundred four thousand, three hundred nine".