47907779 has 2 divisors, whose sum is σ = 47907780. Its totient is φ = 47907778.

The previous prime is 47907763. The next prime is 47907787. The reversal of 47907779 is 97770974.

47907779 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 47907779 - 2⁴ = 47907763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47907709) 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, 23953889 + 23953890.

It is an arithmetic number, because the mean of its divisors is an integer number (23953890).

Almost surely, 2^47907779 is an apocalyptic number.

47907779 is a deficient number, since it is larger than the sum of its proper divisors (1).

47907779 is an equidigital number, since it uses as much as digits as its factorization.

47907779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777924, while the sum is 50.

The square root of 47907779 is about 6921.5445530604. The cubic root of 47907779 is about 363.1912239651.

The spelling of 47907779 in words is "forty-seven million, nine hundred seven thousand, seven hundred seventy-nine".