3804989 has 2 divisors, whose sum is σ = 3804990. Its totient is φ = 3804988.

The previous prime is 3804953. The next prime is 3805001. The reversal of 3804989 is 9894083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 80089 = 1930^2 + 283^2 .

It is an emirp because it is prime and its reverse (9894083) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3804989 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3804919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902494 + 1902495.

It is an arithmetic number, because the mean of its divisors is an integer number (1902495).

Almost surely, 2^3804989 is an apocalyptic number.

It is an amenable number.

3804989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3804989 is an equidigital number, since it uses as much as digits as its factorization.

3804989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 3804989 is about 1950.6381007250. The cubic root of 3804989 is about 156.1173372089.

The spelling of 3804989 in words is "three million, eight hundred four thousand, nine hundred eighty-nine".