3888869 has 4 divisors (see below), whose sum is σ = 4117644. Its totient is φ = 3660096.

The previous prime is 3888851. The next prime is 3888887. The reversal of 3888869 is 9688883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9688883 = 163 ⋅59441.

It is an interprime number because it is at equal distance from previous prime (3888851) and next prime (3888887).

It can be written as a sum of positive squares in 2 ways, for example, as 2356225 + 1532644 = 1535^2 + 1238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3888869 is a prime.

It is a super-2 number, since 2×3888869² = 30246604198322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3888889) 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, 114362 + ... + 114395.

It is an arithmetic number, because the mean of its divisors is an integer number (1029411).

Almost surely, 2^3888869 is an apocalyptic number.

It is an amenable number.

3888869 is a deficient number, since it is larger than the sum of its proper divisors (228775).

3888869 is a wasteful number, since it uses less digits than its factorization.

3888869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228774.

The product of its digits is 663552, while the sum is 50.

The square root of 3888869 is about 1972.0215516064. The cubic root of 3888869 is about 157.2561979253.

The spelling of 3888869 in words is "three million, eight hundred eighty-eight thousand, eight hundred sixty-nine".