4163985 has 24 divisors (see below), whose sum is σ = 8249280. Its totient is φ = 1903392.

The previous prime is 4163953. The next prime is 4163987. The reversal of 4163985 is 5893614.

It is not a de Polignac number, because 4163985 - 2⁵ = 4163953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4163987) 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, 6295 + ... + 6924.

It is an arithmetic number, because the mean of its divisors is an integer number (343720).

Almost surely, 2^4163985 is an apocalyptic number.

4163985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4163985 is a deficient number, since it is larger than the sum of its proper divisors (4085295).

4163985 is a wasteful number, since it uses less digits than its factorization.

4163985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13237 (or 13234 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 4163985 is about 2040.5844750953. The cubic root of 4163985 is about 160.8803684163.

The spelling of 4163985 in words is "four million, one hundred sixty-three thousand, nine hundred eighty-five".