47839191 has 8 divisors (see below), whose sum is σ = 64502640. Its totient is φ = 31534272.

The previous prime is 47839159. The next prime is 47839193. The reversal of 47839191 is 19193874.

It is a happy number.

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

It is not a de Polignac number, because 47839191 - 2⁵ = 47839159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47839193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89320 + ... + 89853.

It is an arithmetic number, because the mean of its divisors is an integer number (8062830).

Almost surely, 2^47839191 is an apocalyptic number.

47839191 is a deficient number, since it is larger than the sum of its proper divisors (16663449).

47839191 is a wasteful number, since it uses less digits than its factorization.

47839191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179265.

The product of its digits is 54432, while the sum is 42.

The square root of 47839191 is about 6916.5881039715. The cubic root of 47839191 is about 363.0178181875.

The spelling of 47839191 in words is "forty-seven million, eight hundred thirty-nine thousand, one hundred ninety-one".