2447947 has 4 divisors (see below), whose sum is σ = 2504920. Its totient is φ = 2390976.

The previous prime is 2447933. The next prime is 2447953. The reversal of 2447947 is 7497442.

2447947 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.

It is a cyclic number.

It is not a de Polignac number, because 2447947 - 2¹¹ = 2445899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2447917) 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, 28422 + ... + 28507.

It is an arithmetic number, because the mean of its divisors is an integer number (626230).

2^2447947 is an apocalyptic number.

2447947 is a deficient number, since it is larger than the sum of its proper divisors (56973).

2447947 is an equidigital number, since it uses as much as digits as its factorization.

2447947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56972.

The product of its digits is 56448, while the sum is 37.

The square root of 2447947 is about 1564.5916400135. The cubic root of 2447947 is about 134.7723093806.

The spelling of 2447947 in words is "two million, four hundred forty-seven thousand, nine hundred forty-seven".