3985897 has 8 divisors (see below), whose sum is σ = 4146912. Its totient is φ = 3828000.

The previous prime is 3985889. The next prime is 3985903. The reversal of 3985897 is 7985893.

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

It is a cyclic number.

It is not a de Polignac number, because 3985897 - 2³ = 3985889 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 9⁶ + 8 + 5³ + 8⁷ + 9⁶ + 7⁷ .

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 3985897.

It is not an unprimeable number, because it can be changed into a prime (3985867) 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, 2022 + ... + 3472.

It is an arithmetic number, because the mean of its divisors is an integer number (518364).

Almost surely, 2^3985897 is an apocalyptic number.

It is an amenable number.

3985897 is a deficient number, since it is larger than the sum of its proper divisors (161015).

3985897 is a wasteful number, since it uses less digits than its factorization.

3985897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559.

The product of its digits is 544320, while the sum is 49.

The square root of 3985897 is about 1996.4711367811. The cubic root of 3985897 is about 158.5533262039.

The spelling of 3985897 in words is "three million, nine hundred eighty-five thousand, eight hundred ninety-seven".