3005869 has 4 divisors (see below), whose sum is σ = 3009340. Its totient is φ = 3002400.

The previous prime is 3005851. The next prime is 3005881. The reversal of 3005869 is 9685003.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9685003 = 19 ⋅509737.

It can be written as a sum of positive squares in 2 ways, for example, as 940900 + 2064969 = 970^2 + 1437^2 .

It is a cyclic number.

It is not a de Polignac number, because 3005869 - 2¹¹ = 3003821 is a prime.

It is a super-2 number, since 2×3005869² = 18070496890322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3005869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3005809) 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, 769 + ... + 2569.

It is an arithmetic number, because the mean of its divisors is an integer number (752335).

Almost surely, 2^3005869 is an apocalyptic number.

It is an amenable number.

3005869 is a deficient number, since it is larger than the sum of its proper divisors (3471).

3005869 is a wasteful number, since it uses less digits than its factorization.

3005869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 3005869 is about 1733.7442141216. The cubic root of 3005869 is about 144.3189464628.

The spelling of 3005869 in words is "three million, five thousand, eight hundred sixty-nine".