2909443 has 8 divisors (see below), whose sum is σ = 3031040. Its totient is φ = 2789640.

The previous prime is 2909429. The next prime is 2909447. The reversal of 2909443 is 3449092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2909443 - 2⁹ = 2908931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2909447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3568 + ... + 4306.

It is an arithmetic number, because the mean of its divisors is an integer number (378880).

2^2909443 is an apocalyptic number.

2909443 is a deficient number, since it is larger than the sum of its proper divisors (121597).

2909443 is a wasteful number, since it uses less digits than its factorization.

2909443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 2909443 is about 1705.7089435188. The cubic root of 2909443 is about 142.7589300666.

The spelling of 2909443 in words is "two million, nine hundred nine thousand, four hundred forty-three".