3146809 has 2 divisors, whose sum is σ = 3146810. Its totient is φ = 3146808.

The previous prime is 3146771. The next prime is 3146827. The reversal of 3146809 is 9086413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 896809 = 1500^2 + 947^2 .

It is a cyclic number.

It is not a de Polignac number, because 3146809 - 2¹¹ = 3144761 is a prime.

It is not a weakly prime, because it can be changed into another prime (3146839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1573404 + 1573405.

It is an arithmetic number, because the mean of its divisors is an integer number (1573405).

Almost surely, 2^3146809 is an apocalyptic number.

It is an amenable number.

3146809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3146809 is an equidigital number, since it uses as much as digits as its factorization.

3146809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3146809 is about 1773.9247447398. The cubic root of 3146809 is about 146.5402049259.

The spelling of 3146809 in words is "three million, one hundred forty-six thousand, eight hundred nine".