47809427 has 2 divisors, whose sum is σ = 47809428. Its totient is φ = 47809426.

The previous prime is 47809393. The next prime is 47809451. The reversal of 47809427 is 72490874.

47809427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47809427 - 2²² = 43615123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47809477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23904713 + 23904714.

It is an arithmetic number, because the mean of its divisors is an integer number (23904714).

Almost surely, 2^47809427 is an apocalyptic number.

47809427 is a deficient number, since it is larger than the sum of its proper divisors (1).

47809427 is an equidigital number, since it uses as much as digits as its factorization.

47809427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 47809427 is about 6914.4361303001. The cubic root of 47809427 is about 362.9425165802.

The spelling of 47809427 in words is "forty-seven million, eight hundred nine thousand, four hundred twenty-seven".