3904289 has 2 divisors, whose sum is σ = 3904290. Its totient is φ = 3904288.

The previous prime is 3904283. The next prime is 3904309. The reversal of 3904289 is 9824093.

3904289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 1669264 = 1495^2 + 1292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3904289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3904283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952144 + 1952145.

It is an arithmetic number, because the mean of its divisors is an integer number (1952145).

Almost surely, 2^3904289 is an apocalyptic number.

It is an amenable number.

3904289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3904289 is an equidigital number, since it uses as much as digits as its factorization.

3904289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 3904289 is about 1975.9273772080. The cubic root of 3904289 is about 157.4637726370.

The spelling of 3904289 in words is "three million, nine hundred four thousand, two hundred eighty-nine".