2943009 has 6 divisors (see below), whose sum is σ = 4251026. Its totient is φ = 1962000.

The previous prime is 2943001. The next prime is 2943079. The reversal of 2943009 is 9003492.

It can be written as a sum of positive squares in only one way, i.e., 2712609 + 230400 = 1647^2 + 480^2 .

It is not a de Polignac number, because 2943009 - 2³ = 2943001 is a prime.

It is a super-2 number, since 2×2943009² = 17322603948162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2943001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163492 + ... + 163509.

2^2943009 is an apocalyptic number.

It is an amenable number.

2943009 is a deficient number, since it is larger than the sum of its proper divisors (1308017).

2943009 is a wasteful number, since it uses less digits than its factorization.

2943009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327007 (or 327004 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2943009 is about 1715.5200377728. The cubic root of 2943009 is about 143.3058315121.

The spelling of 2943009 in words is "two million, nine hundred forty-three thousand, nine".