3868289 has 4 divisors (see below), whose sum is σ = 3872580. Its totient is φ = 3864000.

The previous prime is 3868283. The next prime is 3868297. The reversal of 3868289 is 9828683.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9828683 = 2311 ⋅4253.

It can be written as a sum of positive squares in 2 ways, for example, as 2640625 + 1227664 = 1625^2 + 1108^2 .

It is a cyclic number.

It is not a de Polignac number, because 3868289 - 2¹² = 3864193 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3868283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212 + ... + 2789.

It is an arithmetic number, because the mean of its divisors is an integer number (968145).

Almost surely, 2^3868289 is an apocalyptic number.

It is an amenable number.

3868289 is a deficient number, since it is larger than the sum of its proper divisors (4291).

3868289 is a wasteful number, since it uses less digits than its factorization.

3868289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290.

The product of its digits is 165888, while the sum is 44.

The square root of 3868289 is about 1966.7966341236. The cubic root of 3868289 is about 156.9783057912.

The spelling of 3868289 in words is "three million, eight hundred sixty-eight thousand, two hundred eighty-nine".