47985877 has 2 divisors, whose sum is σ = 47985878. Its totient is φ = 47985876.

The previous prime is 47985859. The next prime is 47985907. The reversal of 47985877 is 77858974.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29658916 + 18326961 = 5446^2 + 4281^2 .

It is a cyclic number.

It is not a de Polignac number, because 47985877 - 2²³ = 39597269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47985827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23992938 + 23992939.

It is an arithmetic number, because the mean of its divisors is an integer number (23992939).

Almost surely, 2^47985877 is an apocalyptic number.

It is an amenable number.

47985877 is a deficient number, since it is larger than the sum of its proper divisors (1).

47985877 is an equidigital number, since it uses as much as digits as its factorization.

47985877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 55.

The square root of 47985877 is about 6927.1839155605. The cubic root of 47985877 is about 363.3884717449.

The spelling of 47985877 in words is "forty-seven million, nine hundred eighty-five thousand, eight hundred seventy-seven".