3861885 has 8 divisors (see below), whose sum is σ = 6179040. Its totient is φ = 2059664.

The previous prime is 3861881. The next prime is 3861889. The reversal of 3861885 is 5881683.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3861881) and next prime (3861889).

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 3861885 - 2² = 3861881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128715 + ... + 128744.

It is an arithmetic number, because the mean of its divisors is an integer number (772380).

Almost surely, 2^3861885 is an apocalyptic number.

It is an amenable number.

3861885 is a deficient number, since it is larger than the sum of its proper divisors (2317155).

3861885 is a wasteful number, since it uses less digits than its factorization.

3861885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257467.

The product of its digits is 46080, while the sum is 39.

The square root of 3861885 is about 1965.1679317555. The cubic root of 3861885 is about 156.8916314383.

The spelling of 3861885 in words is "three million, eight hundred sixty-one thousand, eight hundred eighty-five".