47317887 has 12 divisors (see below), whose sum is σ = 68415984. Its totient is φ = 31513920.

The previous prime is 47317859. The next prime is 47317889. The reversal of 47317887 is 78871374.

It is a happy number.

47317887 is a `hidden beast` number, since 473 + 178 + 8 + 7 = 666.

It is not a de Polignac number, because 47317887 - 2⁸ = 47317631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47317889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10318 + ... + 14180.

It is an arithmetic number, because the mean of its divisors is an integer number (5701332).

Almost surely, 2^47317887 is an apocalyptic number.

47317887 is a deficient number, since it is larger than the sum of its proper divisors (21098097).

47317887 is a wasteful number, since it uses less digits than its factorization.

47317887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230 (or 5227 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 47317887 is about 6878.7998226435. The cubic root of 47317887 is about 361.6943968016.

The spelling of 47317887 in words is "forty-seven million, three hundred seventeen thousand, eight hundred eighty-seven".