3923609 has 2 divisors, whose sum is σ = 3923610. Its totient is φ = 3923608.

The previous prime is 3923599. The next prime is 3923611. The reversal of 3923609 is 9063293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3433609 + 490000 = 1853^2 + 700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3923609 is a prime.

Together with 3923611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3923629) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961804 + 1961805.

It is an arithmetic number, because the mean of its divisors is an integer number (1961805).

Almost surely, 2^3923609 is an apocalyptic number.

It is an amenable number.

3923609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923609 is an equidigital number, since it uses as much as digits as its factorization.

3923609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 3923609 is about 1980.8101877767. The cubic root of 3923609 is about 157.7230768556.

The spelling of 3923609 in words is "three million, nine hundred twenty-three thousand, six hundred nine".