2943849 has 4 divisors (see below), whose sum is σ = 3925136. Its totient is φ = 1962564.

The previous prime is 2943833. The next prime is 2943859. The reversal of 2943849 is 9483492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2943849 - 2⁴ = 2943833 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2943859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490639 + ... + 490644.

It is an arithmetic number, because the mean of its divisors is an integer number (981284).

2^2943849 is an apocalyptic number.

It is an amenable number.

2943849 is a deficient number, since it is larger than the sum of its proper divisors (981287).

2943849 is an equidigital number, since it uses as much as digits as its factorization.

2943849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981286.

The product of its digits is 62208, while the sum is 39.

The square root of 2943849 is about 1715.7648440273. The cubic root of 2943849 is about 143.3194644354.

The spelling of 2943849 in words is "two million, nine hundred forty-three thousand, eight hundred forty-nine".