3888891 has 20 divisors (see below), whose sum is σ = 5956104. Its totient is φ = 2527200.

The previous prime is 3888889. The next prime is 3888893. The reversal of 3888891 is 1988883.

It is an interprime number because it is at equal distance from previous prime (3888889) and next prime (3888893).

It is not a de Polignac number, because 3888891 - 2¹ = 3888889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3888893) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2736 + ... + 3906.

Almost surely, 2^3888891 is an apocalyptic number.

3888891 is a deficient number, since it is larger than the sum of its proper divisors (2067213).

3888891 is a wasteful number, since it uses less digits than its factorization.

3888891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224 (or 1215 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 3888891 is about 1972.0271296308. The cubic root of 3888891 is about 157.2564944665.

The spelling of 3888891 in words is "three million, eight hundred eighty-eight thousand, eight hundred ninety-one".