3861003 has 16 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 2488416.

The previous prime is 3860993. The next prime is 3861007. The reversal of 3861003 is 3001683.

It is not a de Polignac number, because 3861003 - 2⁶ = 3860939 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3861007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19501 + ... + 19697.

It is an arithmetic number, because the mean of its divisors is an integer number (332640).

Almost surely, 2^3861003 is an apocalyptic number.

3861003 is a deficient number, since it is larger than the sum of its proper divisors (1461237).

3861003 is a wasteful number, since it uses less digits than its factorization.

3861003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 3861003 is about 1964.9435106384. The cubic root of 3861003 is about 156.8796865845.

Adding to 3861003 its reverse (3001683), we get a palindrome (6862686).

The spelling of 3861003 in words is "three million, eight hundred sixty-one thousand, three".