3309491 has 2 divisors, whose sum is σ = 3309492. Its totient is φ = 3309490.

The previous prime is 3309473. The next prime is 3309499. The reversal of 3309491 is 1949033.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3309491 - 2¹⁰ = 3308467 is a prime.

It is equal to p₂₃₇₅₃₉ and since 3309491 and 237539 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3309499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1654745 + 1654746.

It is an arithmetic number, because the mean of its divisors is an integer number (1654746).

Almost surely, 2^3309491 is an apocalyptic number.

3309491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3309491 is an equidigital number, since it uses as much as digits as its factorization.

3309491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 3309491 is about 1819.2006486366. The cubic root of 3309491 is about 149.0231485137.

The spelling of 3309491 in words is "three million, three hundred nine thousand, four hundred ninety-one".