3887489 has 2 divisors, whose sum is σ = 3887490. Its totient is φ = 3887488.

The previous prime is 3887473. The next prime is 3887491. The reversal of 3887489 is 9847883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2917264 + 970225 = 1708^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 3887489 - 2⁴ = 3887473 is a prime.

It is a super-2 number, since 2×3887489² = 30225141450242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3887491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3887449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943744 + 1943745.

It is an arithmetic number, because the mean of its divisors is an integer number (1943745).

Almost surely, 2^3887489 is an apocalyptic number.

It is an amenable number.

3887489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887489 is an equidigital number, since it uses as much as digits as its factorization.

3887489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 3887489 is about 1971.6716258039. The cubic root of 3887489 is about 157.2375944677.

The spelling of 3887489 in words is "three million, eight hundred eighty-seven thousand, four hundred eighty-nine".