3845869 has 6 divisors (see below), whose sum is σ = 3931694. Its totient is φ = 3761880.

The previous prime is 3845861. The next prime is 3845873. The reversal of 3845869 is 9685483.

It can be written as a sum of positive squares in only one way, i.e., 1988100 + 1857769 = 1410^2 + 1363^2 .

It is not a de Polignac number, because 3845869 - 2³ = 3845861 is a prime.

It is a super-2 number, since 2×3845869² = 29581416730322, 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 (3845861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1339 + ... + 3079.

Almost surely, 2^3845869 is an apocalyptic number.

It is an amenable number.

3845869 is a deficient number, since it is larger than the sum of its proper divisors (85825).

3845869 is an equidigital number, since it uses as much as digits as its factorization.

3845869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1788 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 3845869 is about 1961.0887282324. The cubic root of 3845869 is about 156.6744440583.

The spelling of 3845869 in words is "three million, eight hundred forty-five thousand, eight hundred sixty-nine".