49447878 has 8 divisors (see below), whose sum is σ = 98895768. Its totient is φ = 16482624.

The previous prime is 49447877. The next prime is 49447897. The reversal of 49447878 is 87874494.

49447878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

49447878 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 49447878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49447877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4120651 + ... + 4120662.

It is an arithmetic number, because the mean of its divisors is an integer number (12361971).

Almost surely, 2^49447878 is an apocalyptic number.

49447878 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.

49447878 is a wasteful number, since it uses less digits than its factorization.

49447878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8241318.

The product of its digits is 1806336, while the sum is 51.

The square root of 49447878 is about 7031.9185148862. The cubic root of 49447878 is about 367.0421045225.

The spelling of 49447878 in words is "forty-nine million, four hundred forty-seven thousand, eight hundred seventy-eight".