3885989 has 2 divisors, whose sum is σ = 3885990. Its totient is φ = 3885988.

The previous prime is 3885983. The next prime is 3885991. The reversal of 3885989 is 9895883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3869089 + 16900 = 1967^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 3885989 - 2⁸ = 3885733 is a prime.

Together with 3885991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3885983) 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, 1942994 + 1942995.

It is an arithmetic number, because the mean of its divisors is an integer number (1942995).

Almost surely, 2^3885989 is an apocalyptic number.

It is an amenable number.

3885989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3885989 is an equidigital number, since it uses as much as digits as its factorization.

3885989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 50.

The square root of 3885989 is about 1971.2912012181. The cubic root of 3885989 is about 157.2173683240.

The spelling of 3885989 in words is "three million, eight hundred eighty-five thousand, nine hundred eighty-nine".