4161985 has 8 divisors (see below), whose sum is σ = 5008320. Its totient is φ = 3320304.

The previous prime is 4161977. The next prime is 4162003. The reversal of 4161985 is 5891614.

4161985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4161985 - 2³ = 4161977 is a prime.

4161985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4161985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (626040).

Almost surely, 2^4161985 is an apocalyptic number.

It is an amenable number.

4161985 is a deficient number, since it is larger than the sum of its proper divisors (846335).

4161985 is a wasteful number, since it uses less digits than its factorization.

4161985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327.

The product of its digits is 8640, while the sum is 34.

The square root of 4161985 is about 2040.0943605628. The cubic root of 4161985 is about 160.8546068549.

It can be divided in two parts, 416 and 1985, that added together give a 4-th power (2401 = 7⁴).

The spelling of 4161985 in words is "four million, one hundred sixty-one thousand, nine hundred eighty-five".