3490905 has 16 divisors (see below), whose sum is σ = 6093504. Its totient is φ = 1692480.

The previous prime is 3490891. The next prime is 3490937. The reversal of 3490905 is 5090943.

It is not a de Polignac number, because 3490905 - 2⁵ = 3490873 is a prime.

It is an alternating number because its digits alternate between odd and even.

3490905 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10414 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (380844).

Almost surely, 2^3490905 is an apocalyptic number.

It is an amenable number.

3490905 is a deficient number, since it is larger than the sum of its proper divisors (2602599).

3490905 is a wasteful number, since it uses less digits than its factorization.

3490905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21176.

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

The square root of 3490905 is about 1868.3963712232. The cubic root of 3490905 is about 151.6978212912.

The spelling of 3490905 in words is "three million, four hundred ninety thousand, nine hundred five".