47390647 has 2 divisors, whose sum is σ = 47390648. Its totient is φ = 47390646.

The previous prime is 47390627. The next prime is 47390657. The reversal of 47390647 is 74609374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47390647 - 2¹¹ = 47388599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47390627) 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, 23695323 + 23695324.

It is an arithmetic number, because the mean of its divisors is an integer number (23695324).

Almost surely, 2^47390647 is an apocalyptic number.

47390647 is a deficient number, since it is larger than the sum of its proper divisors (1).

47390647 is an equidigital number, since it uses as much as digits as its factorization.

47390647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 47390647 is about 6884.0865043955. The cubic root of 47390647 is about 361.8796925285.

The spelling of 47390647 in words is "forty-seven million, three hundred ninety thousand, six hundred forty-seven".