47808387 has 20 divisors (see below), whose sum is σ = 77911416. Its totient is φ = 28974240.

The previous prime is 47808367. The next prime is 47808391. The reversal of 47808387 is 78380874.

It is not a de Polignac number, because 47808387 - 2¹² = 47804291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47808307) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25938 + ... + 27719.

Almost surely, 2^47808387 is an apocalyptic number.

47808387 is a deficient number, since it is larger than the sum of its proper divisors (30103029).

47808387 is a wasteful number, since it uses less digits than its factorization.

47808387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53680 (or 53671 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 47808387 is about 6914.3609249156. The cubic root of 47808387 is about 362.9398848610.

The spelling of 47808387 in words is "forty-seven million, eight hundred eight thousand, three hundred eighty-seven".