3985706 has 16 divisors (see below), whose sum is σ = 6415200. Its totient is φ = 1851408.

The previous prime is 3985697. The next prime is 3985711. The reversal of 3985706 is 6075893.

3985706 = T₇₈ + T₇₉ + ... + T₂₈₉.

3985706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 3985706.

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, 1025 + ... + 3003.

It is an arithmetic number, because the mean of its divisors is an integer number (400950).

Almost surely, 2^3985706 is an apocalyptic number.

3985706 is a deficient number, since it is larger than the sum of its proper divisors (2429494).

3985706 is a wasteful number, since it uses less digits than its factorization.

3985706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 3985706 is about 1996.4233018075. The cubic root of 3985706 is about 158.5507935938.

The spelling of 3985706 in words is "three million, nine hundred eighty-five thousand, seven hundred six".