47688917 has 8 divisors (see below), whose sum is σ = 50661600. Its totient is φ = 44762544.

The previous prime is 47688911. The next prime is 47688941. The reversal of 47688917 is 71988674.

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

It is a cyclic number.

It is not a de Polignac number, because 47688917 - 2¹² = 47684821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47688911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9443 + ... + 13584.

It is an arithmetic number, because the mean of its divisors is an integer number (6332700).

Almost surely, 2^47688917 is an apocalyptic number.

It is an amenable number.

47688917 is a deficient number, since it is larger than the sum of its proper divisors (2972683).

47688917 is a wasteful number, since it uses less digits than its factorization.

47688917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23155.

The product of its digits is 677376, while the sum is 50.

The square root of 47688917 is about 6905.7162553931. The cubic root of 47688917 is about 362.6373117543.

The spelling of 47688917 in words is "forty-seven million, six hundred eighty-eight thousand, nine hundred seventeen".