3989887589 has 2 divisors, whose sum is σ = 3989887590. Its totient is φ = 3989887588.

The previous prime is 3989887549. The next prime is 3989887621. The reversal of 3989887589 is 9857889893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3592204225 + 397683364 = 59935^2 + 19942^2 .

It is a cyclic number.

It is not a de Polignac number, because 3989887589 - 2²⁴ = 3973110373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3989887549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994943794 + 1994943795.

It is an arithmetic number, because the mean of its divisors is an integer number (1994943795).

Almost surely, 2^3989887589 is an apocalyptic number.

It is an amenable number.

3989887589 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989887589 is an equidigital number, since it uses as much as digits as its factorization.

3989887589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313528320, while the sum is 74.

The square root of 3989887589 is about 63165.5569832167. The cubic root of 3989887589 is about 1586.0622187760.

The spelling of 3989887589 in words is "three billion, nine hundred eighty-nine million, eight hundred eighty-seven thousand, five hundred eighty-nine".