3894785 has 8 divisors (see below), whose sum is σ = 4948776. Its totient is φ = 2932480.

The previous prime is 3894763. The next prime is 3894833. The reversal of 3894785 is 5874983.

3894785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2155024 + 1739761 = 1468^2 + 1319^2 .

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

It is not a de Polignac number, because 3894785 - 2⁸ = 3894529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

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, 22826 + ... + 22995.

It is an arithmetic number, because the mean of its divisors is an integer number (618597).

Almost surely, 2^3894785 is an apocalyptic number.

It is an amenable number.

3894785 is a deficient number, since it is larger than the sum of its proper divisors (1053991).

3894785 is a wasteful number, since it uses less digits than its factorization.

3894785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45843.

The product of its digits is 241920, while the sum is 44.

The square root of 3894785 is about 1973.5209651787. The cubic root of 3894785 is about 157.3359003020.

The spelling of 3894785 in words is "three million, eight hundred ninety-four thousand, seven hundred eighty-five".