3405909 has 16 divisors (see below), whose sum is σ = 5104512. Its totient is φ = 2004288.

The previous prime is 3405907. The next prime is 3405929. The reversal of 3405909 is 9095043.

It is not a de Polignac number, because 3405909 - 2¹ = 3405907 is a prime.

It is a super-2 number, since 2×3405909² = 23200432232562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002 + ... + 2795.

It is an arithmetic number, because the mean of its divisors is an integer number (319032).

Almost surely, 2^3405909 is an apocalyptic number.

3405909 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3405909 is a deficient number, since it is larger than the sum of its proper divisors (1698603).

3405909 is a wasteful number, since it uses less digits than its factorization.

3405909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 3405909 is about 1845.5104984800. The cubic root of 3405909 is about 150.4565202964.

The spelling of 3405909 in words is "three million, four hundred five thousand, nine hundred nine".