4006085 has 4 divisors (see below), whose sum is σ = 4807308. Its totient is φ = 3204864.

The previous prime is 4006063. The next prime is 4006091. The reversal of 4006085 is 5806004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 494209 + 3511876 = 703^2 + 1874^2 .

It is a cyclic number.

It is not a de Polignac number, because 4006085 - 2¹⁴ = 3989701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4006085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400604 + ... + 400613.

It is an arithmetic number, because the mean of its divisors is an integer number (1201827).

Almost surely, 2^4006085 is an apocalyptic number.

It is an amenable number.

4006085 is a deficient number, since it is larger than the sum of its proper divisors (801223).

4006085 is an equidigital number, since it uses as much as digits as its factorization.

4006085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801222.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4006085 is about 2001.5206718893. The cubic root of 4006085 is about 158.8205588756.

The spelling of 4006085 in words is "four million, six thousand, eighty-five".