47839487 has 2 divisors, whose sum is σ = 47839488. Its totient is φ = 47839486.

The previous prime is 47839459. The next prime is 47839529. The reversal of 47839487 is 78493874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47839487 - 2⁶ = 47839423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47839427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23919743 + 23919744.

It is an arithmetic number, because the mean of its divisors is an integer number (23919744).

Almost surely, 2^47839487 is an apocalyptic number.

47839487 is a deficient number, since it is larger than the sum of its proper divisors (1).

47839487 is an equidigital number, since it uses as much as digits as its factorization.

47839487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 50.

The square root of 47839487 is about 6916.6095017718. The cubic root of 47839487 is about 363.0185668976.

The spelling of 47839487 in words is "forty-seven million, eight hundred thirty-nine thousand, four hundred eighty-seven".