3904305 has 32 divisors (see below), whose sum is σ = 6749568. Its totient is φ = 1920000.

The previous prime is 3904289. The next prime is 3904309. The reversal of 3904305 is 5034093.

It is not a de Polignac number, because 3904305 - 2⁴ = 3904289 is a prime.

3904305 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3904309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15430 + ... + 15680.

It is an arithmetic number, because the mean of its divisors is an integer number (210924).

Almost surely, 2^3904305 is an apocalyptic number.

It is an amenable number.

3904305 is a deficient number, since it is larger than the sum of its proper divisors (2845263).

3904305 is a wasteful number, since it uses less digits than its factorization.

3904305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 3904305 is about 1975.9314259356. The cubic root of 3904305 is about 157.4639877352.

Adding to 3904305 its reverse (5034093), we get a palindrome (8938398).

The spelling of 3904305 in words is "three million, nine hundred four thousand, three hundred five".