2439942847 has 4 divisors (see below), whose sum is σ = 2440059120. Its totient is φ = 2439826576.

The previous prime is 2439942829. The next prime is 2439942853. The reversal of 2439942847 is 7482499342.

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 2439942847 - 2⁷ = 2439942719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2439942794 and 2439942803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439942647) 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, 16918 + ... + 71875.

It is an arithmetic number, because the mean of its divisors is an integer number (610014780).

Almost surely, 2^2439942847 is an apocalyptic number.

2439942847 is a deficient number, since it is larger than the sum of its proper divisors (116273).

2439942847 is an equidigital number, since it uses as much as digits as its factorization.

2439942847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116272.

The product of its digits is 3483648, while the sum is 52.

The square root of 2439942847 is about 49395.7776231937. Note that the first 3 decimals coincide. The cubic root of 2439942847 is about 1346.2525880356.

The spelling of 2439942847 in words is "two billion, four hundred thirty-nine million, nine hundred forty-two thousand, eight hundred forty-seven".