3400905 has 16 divisors (see below), whose sum is σ = 5728320. Its totient is φ = 1718208.

The previous prime is 3400897. The next prime is 3400907. The reversal of 3400905 is 5090043.

It is not a de Polignac number, because 3400905 - 2³ = 3400897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3400907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5682 + ... + 6251.

It is an arithmetic number, because the mean of its divisors is an integer number (358020).

Almost surely, 2^3400905 is an apocalyptic number.

It is an amenable number.

3400905 is a deficient number, since it is larger than the sum of its proper divisors (2327415).

3400905 is a wasteful number, since it uses less digits than its factorization.

3400905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11960.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 3400905 is about 1844.1542777111. The cubic root of 3400905 is about 150.3828000409.

Adding to 3400905 its reverse (5090043), we get a palindrome (8490948).

The spelling of 3400905 in words is "three million, four hundred thousand, nine hundred five".