3409405 has 12 divisors (see below), whose sum is σ = 4280220. Its totient is φ = 2606912.

The previous prime is 3409387. The next prime is 3409409. The reversal of 3409405 is 5049043.

It can be written as a sum of positive squares in 2 ways, for example, as 2033476 + 1375929 = 1426^2 + 1173^2 .

It is not a de Polignac number, because 3409405 - 2⁷ = 3409277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3409405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3409409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2001 + ... + 3289.

It is an arithmetic number, because the mean of its divisors is an integer number (356685).

Almost surely, 2^3409405 is an apocalyptic number.

It is an amenable number.

3409405 is a deficient number, since it is larger than the sum of its proper divisors (870815).

3409405 is a wasteful number, since it uses less digits than its factorization.

3409405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3409405 is about 1846.4574189512. The cubic root of 3409405 is about 150.5079814607.

The spelling of 3409405 in words is "three million, four hundred nine thousand, four hundred five".