42847444 has 6 divisors (see below), whose sum is σ = 74983034. Its totient is φ = 21423720.

The previous prime is 42847439. The next prime is 42847447. The reversal of 42847444 is 44474824.

42847444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 3283344 = 6290^2 + 1812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42847447) 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 as a sum of consecutive naturals, namely, 5355927 + ... + 5355934.

Almost surely, 2^42847444 is an apocalyptic number.

It is an amenable number.

42847444 is a deficient number, since it is larger than the sum of its proper divisors (32135590).

42847444 is a wasteful number, since it uses less digits than its factorization.

42847444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10711865 (or 10711863 counting only the distinct ones).

The product of its digits is 114688, while the sum is 37.

The square root of 42847444 is about 6545.7959027150. The cubic root of 42847444 is about 349.9250016175.

The spelling of 42847444 in words is "forty-two million, eight hundred forty-seven thousand, four hundred forty-four".