47135985 has 64 divisors (see below), whose sum is σ = 87816960. Its totient is φ = 21381120.

The previous prime is 47135983. The next prime is 47135989. The reversal of 47135985 is 58953174.

It is not a de Polignac number, because 47135985 - 2¹ = 47135983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47135983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 195465 + ... + 195705.

It is an arithmetic number, because the mean of its divisors is an integer number (1372140).

Almost surely, 2^47135985 is an apocalyptic number.

It is an amenable number.

47135985 is a deficient number, since it is larger than the sum of its proper divisors (40680975).

47135985 is a wasteful number, since it uses less digits than its factorization.

47135985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338.

The product of its digits is 151200, while the sum is 42.

The square root of 47135985 is about 6865.5651624611. The cubic root of 47135985 is about 361.2303198452.

The spelling of 47135985 in words is "forty-seven million, one hundred thirty-five thousand, nine hundred eighty-five".