2889943 has 4 divisors (see below), whose sum is σ = 3302800. Its totient is φ = 2477088.

The previous prime is 2889923. The next prime is 2889947. The reversal of 2889943 is 3499882.

It is a happy number.

2889943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3499882 = 2 ⋅1749941.

It is a cyclic number.

It is not a de Polignac number, because 2889943 - 2¹⁷ = 2758871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2889943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2889947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206418 + ... + 206431.

It is an arithmetic number, because the mean of its divisors is an integer number (825700).

2^2889943 is an apocalyptic number.

2889943 is a deficient number, since it is larger than the sum of its proper divisors (412857).

2889943 is an equidigital number, since it uses as much as digits as its factorization.

2889943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412856.

The product of its digits is 124416, while the sum is 43.

The square root of 2889943 is about 1699.9832352115. The cubic root of 2889943 is about 142.4392764770.

The spelling of 2889943 in words is "two million, eight hundred eighty-nine thousand, nine hundred forty-three".