3405405 has 8 divisors (see below), whose sum is σ = 5448672. Its totient is φ = 1816208.

The previous prime is 3405397. The next prime is 3405431. The reversal of 3405405 is 5045043.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3405405 - 2³ = 3405397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113499 + ... + 113528.

It is an arithmetic number, because the mean of its divisors is an integer number (681084).

Almost surely, 2^3405405 is an apocalyptic number.

It is an amenable number.

3405405 is a deficient number, since it is larger than the sum of its proper divisors (2043267).

3405405 is a wasteful number, since it uses less digits than its factorization.

3405405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227035.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 3405405 is about 1845.3739458440. The cubic root of 3405405 is about 150.4490985061.

The spelling of 3405405 in words is "three million, four hundred five thousand, four hundred five".