47085857 has 32 divisors (see below), whose sum is σ = 61797120. Its totient is φ = 34836480.

The previous prime is 47085847. The next prime is 47085859. The reversal of 47085857 is 75858074.

47085857 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 47085857 - 2⁸ = 47085601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47085859) 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 31 ways as a sum of consecutive naturals, for example, 195257 + ... + 195497.

It is an arithmetic number, because the mean of its divisors is an integer number (1931160).

Almost surely, 2^47085857 is an apocalyptic number.

It is an amenable number.

47085857 is a deficient number, since it is larger than the sum of its proper divisors (14711263).

47085857 is a wasteful number, since it uses less digits than its factorization.

47085857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 47085857 is about 6861.9135086359. The cubic root of 47085857 is about 361.1022211373.

The spelling of 47085857 in words is "forty-seven million, eighty-five thousand, eight hundred fifty-seven".