2443947 has 16 divisors (see below), whose sum is σ = 3671040. Its totient is φ = 1432800.

The previous prime is 2443939. The next prime is 2443949. The reversal of 2443947 is 7493442.

2443947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2443947 - 2³ = 2443939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a d-powerful number, because it can be written as 2²¹ + 4⁴ + 4⁷ + 3¹⁰ + 9⁴ + 4⁹ + 7⁴ .

It is not an unprimeable number, because it can be changed into a prime (2443949) 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 15 ways as a sum of consecutive naturals, for example, 172 + ... + 2217.

It is an arithmetic number, because the mean of its divisors is an integer number (229440).

2^2443947 is an apocalyptic number.

2443947 is a deficient number, since it is larger than the sum of its proper divisors (1227093).

2443947 is a wasteful number, since it uses less digits than its factorization.

2443947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434.

The product of its digits is 24192, while the sum is 33.

The square root of 2443947 is about 1563.3128285791. The cubic root of 2443947 is about 134.6988623748.

The spelling of 2443947 in words is "two million, four hundred forty-three thousand, nine hundred forty-seven".