47816647 has 2 divisors, whose sum is σ = 47816648. Its totient is φ = 47816646.

The previous prime is 47816641. The next prime is 47816651. The reversal of 47816647 is 74661874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47816647 - 2⁷ = 47816519 is a prime.

It is equal to p_2877784 and since 47816647 and 2877784 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47816641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23908323 + 23908324.

It is an arithmetic number, because the mean of its divisors is an integer number (23908324).

Almost surely, 2^47816647 is an apocalyptic number.

47816647 is a deficient number, since it is larger than the sum of its proper divisors (1).

47816647 is an equidigital number, since it uses as much as digits as its factorization.

47816647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 47816647 is about 6914.9582066705. The cubic root of 47816647 is about 362.9607857322.

The spelling of 47816647 in words is "forty-seven million, eight hundred sixteen thousand, six hundred forty-seven".