47844887 has 4 divisors (see below), whose sum is σ = 48382560. Its totient is φ = 47307216.

The previous prime is 47844877. The next prime is 47844913. The reversal of 47844887 is 78844874.

It is a happy number.

47844887 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 47844887 - 2⁴ = 47844871 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 (47844877) 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 3 ways as a sum of consecutive naturals, for example, 268703 + ... + 268880.

It is an arithmetic number, because the mean of its divisors is an integer number (12095640).

Almost surely, 2^47844887 is an apocalyptic number.

47844887 is a deficient number, since it is larger than the sum of its proper divisors (537673).

47844887 is an equidigital number, since it uses as much as digits as its factorization.

47844887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537672.

The product of its digits is 1605632, while the sum is 50.

The square root of 47844887 is about 6916.9998554287. Note that the first 3 decimals coincide. The cubic root of 47844887 is about 363.0322252555.

The spelling of 47844887 in words is "forty-seven million, eight hundred forty-four thousand, eight hundred eighty-seven".