2043909 has 12 divisors (see below), whose sum is σ = 3374176. Its totient is φ = 1167912.

The previous prime is 2043907. The next prime is 2043911. The reversal of 2043909 is 9093402.

It is an interprime number because it is at equal distance from previous prime (2043907) and next prime (2043911).

It is not a de Polignac number, because 2043909 - 2¹ = 2043907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16159 + ... + 16284.

2^2043909 is an apocalyptic number.

It is an amenable number.

2043909 is a deficient number, since it is larger than the sum of its proper divisors (1330267).

2043909 is a wasteful number, since it uses less digits than its factorization.

2043909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32456 (or 32453 counting only the distinct ones).

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

The square root of 2043909 is about 1429.6534545127. The cubic root of 2043909 is about 126.9074697487.

The spelling of 2043909 in words is "two million, forty-three thousand, nine hundred nine".