47687887 has 4 divisors (see below), whose sum is σ = 51356200. Its totient is φ = 44019576.

The previous prime is 47687851. The next prime is 47687917. The reversal of 47687887 is 78878674.

It is a happy number.

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 47687887 - 2¹⁵ = 47655119 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 (47687837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1834137 + ... + 1834162.

It is an arithmetic number, because the mean of its divisors is an integer number (12839050).

Almost surely, 2^47687887 is an apocalyptic number.

47687887 is a deficient number, since it is larger than the sum of its proper divisors (3668313).

47687887 is a wasteful number, since it uses less digits than its factorization.

47687887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668312.

The product of its digits is 4214784, while the sum is 55.

The square root of 47687887 is about 6905.6416790911. The cubic root of 47687887 is about 362.6347009511.

The spelling of 47687887 in words is "forty-seven million, six hundred eighty-seven thousand, eight hundred eighty-seven".