3861917 has 4 divisors (see below), whose sum is σ = 3867360. Its totient is φ = 3856476.

The previous prime is 3861911. The next prime is 3861929. The reversal of 3861917 is 7191683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7191683 = 179 ⋅40177.

It is a cyclic number.

It is not a de Polignac number, because 3861917 - 2¹⁰ = 3860893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861911) 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, 1463 + ... + 3140.

It is an arithmetic number, because the mean of its divisors is an integer number (966840).

Almost surely, 2^3861917 is an apocalyptic number.

It is an amenable number.

3861917 is a deficient number, since it is larger than the sum of its proper divisors (5443).

3861917 is an equidigital number, since it uses as much as digits as its factorization.

3861917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442.

The product of its digits is 9072, while the sum is 35.

The square root of 3861917 is about 1965.1760735364. The cubic root of 3861917 is about 156.8920647775.

The spelling of 3861917 in words is "three million, eight hundred sixty-one thousand, nine hundred seventeen".