47849985 has 24 divisors (see below), whose sum is σ = 87820200. Its totient is φ = 24018432.

The previous prime is 47849983. The next prime is 47849987. The reversal of 47849985 is 58994874.

47849985 is a `hidden beast` number, since 4 + 78 + 499 + 85 = 666.

It is an interprime number because it is at equal distance from previous prime (47849983) and next prime (47849987).

It can be written as a sum of positive squares in 4 ways, for example, as 26255376 + 21594609 = 5124^2 + 4647^2 .

It is not a de Polignac number, because 47849985 - 2¹ = 47849983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47849981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30510 + ... + 32039.

It is an arithmetic number, because the mean of its divisors is an integer number (3659175).

Almost surely, 2^47849985 is an apocalyptic number.

47849985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47849985 is a deficient number, since it is larger than the sum of its proper divisors (39970215).

47849985 is a wasteful number, since it uses less digits than its factorization.

47849985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62577 (or 62574 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 47849985 is about 6917.3683579812. The cubic root of 47849985 is about 363.0451188140.

The spelling of 47849985 in words is "forty-seven million, eight hundred forty-nine thousand, nine hundred eighty-five".