4085990 has 16 divisors (see below), whose sum is σ = 7439040. Its totient is φ = 1615680.

The previous prime is 4085987. The next prime is 4085993. The reversal of 4085990 is 995804.

It is an interprime number because it is at equal distance from previous prime (4085987) and next prime (4085993).

It is a self number, because there is not a number n which added to its sum of digits gives 4085990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406 + ... + 3185.

It is an arithmetic number, because the mean of its divisors is an integer number (464940).

Almost surely, 2^4085990 is an apocalyptic number.

4085990 is a deficient number, since it is larger than the sum of its proper divisors (3353050).

4085990 is a wasteful number, since it uses less digits than its factorization.

4085990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 4085990 is about 2021.3831897985. The cubic root of 4085990 is about 159.8695551381.

The spelling of 4085990 in words is "four million, eighty-five thousand, nine hundred ninety".