47424449 has 6 divisors (see below), whose sum is σ = 47908950. Its totient is φ = 46944800.

The previous prime is 47424427. The next prime is 47424463. The reversal of 47424449 is 94442474.

47424449 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 3 ways, for example, as 43983424 + 3441025 = 6632^2 + 1855^2 .

It is not a de Polignac number, because 47424449 - 2¹² = 47420353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47424499) 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 in 5 ways as a sum of consecutive naturals, for example, 7877 + ... + 12525.

It is an arithmetic number, because the mean of its divisors is an integer number (7984825).

Almost surely, 2^47424449 is an apocalyptic number.

It is an amenable number.

47424449 is a deficient number, since it is larger than the sum of its proper divisors (484501).

47424449 is an equidigital number, since it uses as much as digits as its factorization.

47424449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851 (or 4750 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 47424449 is about 6886.5411492272. The cubic root of 47424449 is about 361.9657105582.

The spelling of 47424449 in words is "forty-seven million, four hundred twenty-four thousand, four hundred forty-nine".