47809877 has 2 divisors, whose sum is σ = 47809878. Its totient is φ = 47809876.

The previous prime is 47809873. The next prime is 47809897. The reversal of 47809877 is 77890874.

47809877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45616516 + 2193361 = 6754^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 47809877 - 2² = 47809873 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 (47809873) 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, 23904938 + 23904939.

It is an arithmetic number, because the mean of its divisors is an integer number (23904939).

Almost surely, 2^47809877 is an apocalyptic number.

It is an amenable number.

47809877 is a deficient number, since it is larger than the sum of its proper divisors (1).

47809877 is an equidigital number, since it uses as much as digits as its factorization.

47809877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 47809877 is about 6914.4686708380. The cubic root of 47809877 is about 362.9436552930.

The spelling of 47809877 in words is "forty-seven million, eight hundred nine thousand, eight hundred seventy-seven".