47985717 has 16 divisors (see below), whose sum is σ = 69140288. Its totient is φ = 29427840.

The previous prime is 47985709. The next prime is 47985727. The reversal of 47985717 is 71758974.

47985717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47985717 - 2³ = 47985709 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 (47985727) 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 15 ways as a sum of consecutive naturals, for example, 10242 + ... + 14172.

It is an arithmetic number, because the mean of its divisors is an integer number (4321268).

Almost surely, 2^47985717 is an apocalyptic number.

It is an amenable number.

47985717 is a deficient number, since it is larger than the sum of its proper divisors (21154571).

47985717 is a wasteful number, since it uses less digits than its factorization.

47985717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260.

The product of its digits is 493920, while the sum is 48.

The square root of 47985717 is about 6927.1723668464. The cubic root of 47985717 is about 363.3880678607.

The spelling of 47985717 in words is "forty-seven million, nine hundred eighty-five thousand, seven hundred seventeen".