3404840 has 16 divisors (see below), whose sum is σ = 7660980. Its totient is φ = 1361920.

The previous prime is 3404839. The next prime is 3404867. The reversal of 3404840 is 484043.

3404840 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 2 ways, for example, as 3290596 + 114244 = 1814^2 + 338^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42521 + ... + 42600.

Almost surely, 2^3404840 is an apocalyptic number.

It is an amenable number.

3404840 is an abundant number, since it is smaller than the sum of its proper divisors (4256140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3404840 is a wasteful number, since it uses less digits than its factorization.

3404840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85132 (or 85128 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 3404840 is about 1845.2208539901. The cubic root of 3404840 is about 150.4407775729.

Adding to 3404840 its reverse (484043), we get a palindrome (3888883).

The spelling of 3404840 in words is "three million, four hundred four thousand, eight hundred forty".