3929609 has 2 divisors, whose sum is σ = 3929610. Its totient is φ = 3929608.

The previous prime is 3929593. The next prime is 3929621. The reversal of 3929609 is 9069293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 107584 = 1955^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 3929609 - 2⁴ = 3929593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3929699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964804 + 1964805.

It is an arithmetic number, because the mean of its divisors is an integer number (1964805).

Almost surely, 2^3929609 is an apocalyptic number.

It is an amenable number.

3929609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3929609 is an equidigital number, since it uses as much as digits as its factorization.

3929609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 3929609 is about 1982.3241410022. The cubic root of 3929609 is about 157.8034328483.

It can be divided in two parts, 392 and 9609, that added together give a palindrome (10001).

The spelling of 3929609 in words is "three million, nine hundred twenty-nine thousand, six hundred nine".