1989588 has 12 divisors (see below), whose sum is σ = 4642400. Its totient is φ = 663192.

The previous prime is 1989583. The next prime is 1989613. The reversal of 1989588 is 8859891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989583) 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 in 3 ways as a sum of consecutive naturals, for example, 82888 + ... + 82911.

2^1989588 is an apocalyptic number.

It is an amenable number.

1989588 is an abundant number, since it is smaller than the sum of its proper divisors (2652812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1989588 is a wasteful number, since it uses less digits than its factorization.

1989588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165806 (or 165804 counting only the distinct ones).

The product of its digits is 207360, while the sum is 48.

The square root of 1989588 is about 1410.5275608793. The cubic root of 1989588 is about 125.7730861785.

The spelling of 1989588 in words is "one million, nine hundred eighty-nine thousand, five hundred eighty-eight".