47660447 has 2 divisors, whose sum is σ = 47660448. Its totient is φ = 47660446.

The previous prime is 47660429. The next prime is 47660449. The reversal of 47660447 is 74406674.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47660447 - 2¹⁸ = 47398303 is a prime.

Together with 47660449, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47660447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47660449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23830223 + 23830224.

It is an arithmetic number, because the mean of its divisors is an integer number (23830224).

Almost surely, 2^47660447 is an apocalyptic number.

47660447 is a deficient number, since it is larger than the sum of its proper divisors (1).

47660447 is an equidigital number, since it uses as much as digits as its factorization.

47660447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 47660447 is about 6903.6546118704. The cubic root of 47660447 is about 362.5651332824.

The spelling of 47660447 in words is "forty-seven million, six hundred sixty thousand, four hundred forty-seven".