3309689 has 2 divisors, whose sum is σ = 3309690. Its totient is φ = 3309688.

The previous prime is 3309673. The next prime is 3309701. The reversal of 3309689 is 9869033.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2325625 + 984064 = 1525^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 3309689 - 2⁴ = 3309673 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (3309659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1654844 + 1654845.

It is an arithmetic number, because the mean of its divisors is an integer number (1654845).

Almost surely, 2^3309689 is an apocalyptic number.

It is an amenable number.

3309689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3309689 is an equidigital number, since it uses as much as digits as its factorization.

3309689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 3309689 is about 1819.2550673284. The cubic root of 3309689 is about 149.0261203700.

The spelling of 3309689 in words is "three million, three hundred nine thousand, six hundred eighty-nine".