3684969 has 6 divisors (see below), whose sum is σ = 5322746. Its totient is φ = 2456640.

The previous prime is 3684959. The next prime is 3684977. The reversal of 3684969 is 9694863.

3684969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2518569 + 1166400 = 1587^2 + 1080^2 .

It is not a de Polignac number, because 3684969 - 2⁴ = 3684953 is a prime.

It is a super-2 number, since 2×3684969² = 27157993061922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹² + 6 + 8⁷ + 4¹⁰ + 9 + 6⁵ + 9 .

It is a Duffinian number.

It is a Curzon number.

3684969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3684929) 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 5 ways as a sum of consecutive naturals, for example, 204712 + ... + 204729.

Almost surely, 2^3684969 is an apocalyptic number.

It is an amenable number.

3684969 is a deficient number, since it is larger than the sum of its proper divisors (1637777).

3684969 is a wasteful number, since it uses less digits than its factorization.

3684969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409447 (or 409444 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 3684969 is about 1919.6273075782. The cubic root of 3684969 is about 154.4583103025.

The spelling of 3684969 in words is "three million, six hundred eighty-four thousand, nine hundred sixty-nine".