3872869 has 32 divisors (see below), whose sum is σ = 5370624. Its totient is φ = 2695680.

The previous prime is 3872851. The next prime is 3872873. The reversal of 3872869 is 9682783.

3872869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3872869 - 2¹¹ = 3870821 is a prime.

It is a super-2 number, since 2×3872869² = 29998228582322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁷ + 8⁵ + 7² + 2¹¹ + 8⁷ + 6⁸ + 9⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53017 + ... + 53089.

It is an arithmetic number, because the mean of its divisors is an integer number (167832).

Almost surely, 2^3872869 is an apocalyptic number.

It is an amenable number.

3872869 is a deficient number, since it is larger than the sum of its proper divisors (1497755).

3872869 is a wasteful number, since it uses less digits than its factorization.

3872869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157.

The product of its digits is 145152, while the sum is 43.

The square root of 3872869 is about 1967.9606195247. The cubic root of 3872869 is about 157.0402347284.

The spelling of 3872869 in words is "three million, eight hundred seventy-two thousand, eight hundred sixty-nine".