3149309 has 2 divisors, whose sum is σ = 3149310. Its totient is φ = 3149308.

The previous prime is 3149273. The next prime is 3149339. The reversal of 3149309 is 9039413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 605284 = 1595^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 3149309 - 2²⁰ = 2100733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3149339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574654 + 1574655.

It is an arithmetic number, because the mean of its divisors is an integer number (1574655).

Almost surely, 2^3149309 is an apocalyptic number.

It is an amenable number.

3149309 is a deficient number, since it is larger than the sum of its proper divisors (1).

3149309 is an equidigital number, since it uses as much as digits as its factorization.

3149309 is an evil number, because the sum of its binary digits is even.

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

The square root of 3149309 is about 1774.6292570562. The cubic root of 3149309 is about 146.5790012154.

The spelling of 3149309 in words is "three million, one hundred forty-nine thousand, three hundred nine".