3985853 has 2 divisors, whose sum is σ = 3985854. Its totient is φ = 3985852.

The previous prime is 3985843. The next prime is 3985859. The reversal of 3985853 is 3585893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2393209 + 1592644 = 1547^2 + 1262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3985853 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3985853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992926 + 1992927.

It is an arithmetic number, because the mean of its divisors is an integer number (1992927).

Almost surely, 2^3985853 is an apocalyptic number.

It is an amenable number.

3985853 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985853 is an equidigital number, since it uses as much as digits as its factorization.

3985853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 41.

The square root of 3985853 is about 1996.4601173076. The cubic root of 3985853 is about 158.5527427826.

The spelling of 3985853 in words is "three million, nine hundred eighty-five thousand, eight hundred fifty-three".