3408905 has 4 divisors (see below), whose sum is σ = 4090692. Its totient is φ = 2727120.

The previous prime is 3408887. The next prime is 3408917. The reversal of 3408905 is 5098043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2611456 + 797449 = 1616^2 + 893^2 .

It is not a de Polignac number, because 3408905 - 2¹⁰ = 3407881 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340886 + ... + 340895.

It is an arithmetic number, because the mean of its divisors is an integer number (1022673).

Almost surely, 2^3408905 is an apocalyptic number.

It is an amenable number.

3408905 is a deficient number, since it is larger than the sum of its proper divisors (681787).

3408905 is an equidigital number, since it uses as much as digits as its factorization.

3408905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681786.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 3408905 is about 1846.3220195838. The cubic root of 3408905 is about 150.5006236108.

The spelling of 3408905 in words is "three million, four hundred eight thousand, nine hundred five".