3309997 has 2 divisors, whose sum is σ = 3309998. Its totient is φ = 3309996.

The previous prime is 3309991. The next prime is 3310049. The reversal of 3309997 is 7999033.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3279721 + 30276 = 1811^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 3309997 - 2⁷ = 3309869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3309991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1654998 + 1654999.

It is an arithmetic number, because the mean of its divisors is an integer number (1654999).

Almost surely, 2^3309997 is an apocalyptic number.

It is an amenable number.

3309997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3309997 is an equidigital number, since it uses as much as digits as its factorization.

3309997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 3309997 is about 1819.3397153913. The cubic root of 3309997 is about 149.0307430220.

The spelling of 3309997 in words is "three million, three hundred nine thousand, nine hundred ninety-seven".