2947943 has 4 divisors (see below), whose sum is σ = 2951520. Its totient is φ = 2944368.

The previous prime is 2947939. The next prime is 2947949. The reversal of 2947943 is 3497492.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2947943 - 2² = 2947939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2947897 and 2947906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 2432.

It is an arithmetic number, because the mean of its divisors is an integer number (737880).

2^2947943 is an apocalyptic number.

2947943 is a deficient number, since it is larger than the sum of its proper divisors (3577).

2947943 is a wasteful number, since it uses less digits than its factorization.

2947943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576.

The product of its digits is 54432, while the sum is 38.

The square root of 2947943 is about 1716.9574834573. The cubic root of 2947943 is about 143.3858716119.

The spelling of 2947943 in words is "two million, nine hundred forty-seven thousand, nine hundred forty-three".