47838197 has 12 divisors (see below), whose sum is σ = 54399660. Its totient is φ = 41986560.

The previous prime is 47838191. The next prime is 47838199. The reversal of 47838197 is 79183874.

It can be written as a sum of positive squares in 2 ways, for example, as 29528356 + 18309841 = 5434^2 + 4279^2 .

It is a de Polignac number, because none of the positive numbers 2^k-47838197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47838191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3308 + ... + 10325.

It is an arithmetic number, because the mean of its divisors is an integer number (4533305).

Almost surely, 2^47838197 is an apocalyptic number.

It is an amenable number.

47838197 is a deficient number, since it is larger than the sum of its proper divisors (6561463).

47838197 is a wasteful number, since it uses less digits than its factorization.

47838197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13684 (or 13673 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The square root of 47838197 is about 6916.5162473604. The cubic root of 47838197 is about 363.0153039155.

The spelling of 47838197 in words is "forty-seven million, eight hundred thirty-eight thousand, one hundred ninety-seven".