3867885 has 32 divisors (see below), whose sum is σ = 7860480. Its totient is φ = 1767744.

The previous prime is 3867881. The next prime is 3867889. The reversal of 3867885 is 5887683.

It is an interprime number because it is at equal distance from previous prime (3867881) and next prime (3867889).

It is not a de Polignac number, because 3867885 - 2² = 3867881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3867885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102 + ... + 2991.

It is an arithmetic number, because the mean of its divisors is an integer number (245640).

Almost surely, 2^3867885 is an apocalyptic number.

3867885 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3867885 is an abundant number, since it is smaller than the sum of its proper divisors (3992595).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3867885 is a wasteful number, since it uses less digits than its factorization.

3867885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114 (or 4108 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 3867885 is about 1966.6939263648. The cubic root of 3867885 is about 156.9728407183.

The spelling of 3867885 in words is "three million, eight hundred sixty-seven thousand, eight hundred eighty-five".