3887869 has 4 divisors (see below), whose sum is σ = 3894940. Its totient is φ = 3880800.

The previous prime is 3887867. The next prime is 3887881. The reversal of 3887869 is 9687883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9687883 = 139 ⋅69697.

It can be written as a sum of positive squares in 2 ways, for example, as 1592644 + 2295225 = 1262^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 3887869 - 2¹ = 3887867 is a prime.

It is a super-2 number, since 2×3887869² = 30231050722322, 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 (3887861) 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, 2634 + ... + 3835.

It is an arithmetic number, because the mean of its divisors is an integer number (973735).

Almost surely, 2^3887869 is an apocalyptic number.

It is an amenable number.

3887869 is a deficient number, since it is larger than the sum of its proper divisors (7071).

3887869 is an equidigital number, since it uses as much as digits as its factorization.

3887869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070.

The product of its digits is 580608, while the sum is 49.

The square root of 3887869 is about 1971.7679883800. The cubic root of 3887869 is about 157.2427175981.

The spelling of 3887869 in words is "three million, eight hundred eighty-seven thousand, eight hundred sixty-nine".