47539878 has 8 divisors (see below), whose sum is σ = 95079768. Its totient is φ = 15846624.

The previous prime is 47539867. The next prime is 47539879. The reversal of 47539878 is 87893574.

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

47539878 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47539878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47539879) 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, 3961651 + ... + 3961662.

It is an arithmetic number, because the mean of its divisors is an integer number (11884971).

Almost surely, 2^47539878 is an apocalyptic number.

47539878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47539878 is a wasteful number, since it uses less digits than its factorization.

47539878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923318.

The product of its digits is 1693440, while the sum is 51.

The square root of 47539878 is about 6894.9168232837. The cubic root of 47539878 is about 362.2591421016.

The spelling of 47539878 in words is "forty-seven million, five hundred thirty-nine thousand, eight hundred seventy-eight".