47839745 has 8 divisors (see below), whose sum is σ = 57493800. Its totient is φ = 38214400.

The previous prime is 47839741. The next prime is 47839787. The reversal of 47839745 is 54793874.

47839745 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 4 ways, for example, as 4068289 + 43771456 = 2017^2 + 6616^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47839745 - 2² = 47839741 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47839745.

It is not an unprimeable number, because it can be changed into a prime (47839741) 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 7 ways as a sum of consecutive naturals, for example, 3320 + ... + 10329.

It is an arithmetic number, because the mean of its divisors is an integer number (7186725).

Almost surely, 2^47839745 is an apocalyptic number.

It is an amenable number.

47839745 is a deficient number, since it is larger than the sum of its proper divisors (9654055).

47839745 is a wasteful number, since it uses less digits than its factorization.

47839745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14355.

The product of its digits is 846720, while the sum is 47.

The square root of 47839745 is about 6916.6281525032. The cubic root of 47839745 is about 363.0192194870.

It can be divided in two parts, 47839 and 745, that added together give a palindrome (48584).

The spelling of 47839745 in words is "forty-seven million, eight hundred thirty-nine thousand, seven hundred forty-five".