3902489 has 2 divisors, whose sum is σ = 3902490. Its totient is φ = 3902488.

The previous prime is 3902477. The next prime is 3902491. The reversal of 3902489 is 9842093.

3902489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2778889 + 1123600 = 1667^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 3902489 - 2⁴ = 3902473 is a prime.

Together with 3902491, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₂₇₆₇₆₇ and since 3902489 and 276767 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3902419) 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, 1951244 + 1951245.

It is an arithmetic number, because the mean of its divisors is an integer number (1951245).

Almost surely, 2^3902489 is an apocalyptic number.

It is an amenable number.

3902489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3902489 is an equidigital number, since it uses as much as digits as its factorization.

3902489 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 3902489 is about 1975.4718423708. The cubic root of 3902489 is about 157.4395703337.

The spelling of 3902489 in words is "three million, nine hundred two thousand, four hundred eighty-nine".