47978085 has 32 divisors (see below), whose sum is σ = 79540992. Its totient is φ = 24675840.

The previous prime is 47978083. The next prime is 47978087. The reversal of 47978085 is 58087974.

47978085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47978083) and next prime (47978087).

It is not a de Polignac number, because 47978085 - 2¹ = 47978083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47978083) 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 in 31 ways as a sum of consecutive naturals, for example, 75720 + ... + 76350.

It is an arithmetic number, because the mean of its divisors is an integer number (2485656).

Almost surely, 2^47978085 is an apocalyptic number.

It is an amenable number.

47978085 is a deficient number, since it is larger than the sum of its proper divisors (31562907).

47978085 is a wasteful number, since it uses less digits than its factorization.

47978085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 47978085 is about 6926.6214708182. The cubic root of 47978085 is about 363.3688015390.

The spelling of 47978085 in words is "forty-seven million, nine hundred seventy-eight thousand, eighty-five".