47781859 has 2 divisors, whose sum is σ = 47781860. Its totient is φ = 47781858.

The previous prime is 47781847. The next prime is 47781863. The reversal of 47781859 is 95818774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47781859 - 2⁷ = 47781731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47781809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23890929 + 23890930.

It is an arithmetic number, because the mean of its divisors is an integer number (23890930).

Almost surely, 2^47781859 is an apocalyptic number.

47781859 is a deficient number, since it is larger than the sum of its proper divisors (1).

47781859 is an equidigital number, since it uses as much as digits as its factorization.

47781859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 49.

The square root of 47781859 is about 6912.4423324900. The cubic root of 47781859 is about 362.8727428717.

The spelling of 47781859 in words is "forty-seven million, seven hundred eighty-one thousand, eight hundred fifty-nine".