3873869 has 4 divisors (see below), whose sum is σ = 3888540. Its totient is φ = 3859200.

The previous prime is 3873847. The next prime is 3873871. The reversal of 3873869 is 9683783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9683783 = 971 ⋅9973.

It can be written as a sum of positive squares in 2 ways, for example, as 2402500 + 1471369 = 1550^2 + 1213^2 .

It is a cyclic number.

It is not a de Polignac number, because 3873869 - 2¹⁶ = 3808333 is a prime.

It is a super-2 number, since 2×3873869² = 30013722058322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3873809) 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, 6932 + ... + 7469.

It is an arithmetic number, because the mean of its divisors is an integer number (972135).

Almost surely, 2^3873869 is an apocalyptic number.

It is an amenable number.

3873869 is a deficient number, since it is larger than the sum of its proper divisors (14671).

3873869 is a wasteful number, since it uses less digits than its factorization.

3873869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14670.

The product of its digits is 217728, while the sum is 44.

The square root of 3873869 is about 1968.2146732509. The cubic root of 3873869 is about 157.0537498358.

The spelling of 3873869 in words is "three million, eight hundred seventy-three thousand, eight hundred sixty-nine".